Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution
Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the X...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ardit, Matteo [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2012 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2012 |
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| Übergeordnetes Werk: |
Enthalten in: Physics and chemistry of minerals - Berlin : Springer, 1977, 39(2012), 9 vom: 20. Juli, Seite 713-723 |
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| Übergeordnetes Werk: |
volume:39 ; year:2012 ; number:9 ; day:20 ; month:07 ; pages:713-723 |
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| DOI / URN: |
10.1007/s00269-012-0525-9 |
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SPR003481085 |
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| 100 | 1 | |a Ardit, Matteo |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution |
| 264 | 1 | |c 2012 | |
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| 520 | |a Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. | ||
| 650 | 4 | |a Melilite-type structure |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Hardystonite |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a X-ray powder diffraction |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Electronic absorption spectroscopy |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Local properties of |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Co |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Cruciani, Giuseppe |4 aut | |
| 700 | 1 | |a Dondi, Michele |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Physics and chemistry of minerals |d Berlin : Springer, 1977 |g 39(2012), 9 vom: 20. Juli, Seite 713-723 |w (DE-627)254639038 |w (DE-600)1463021-7 |x 1432-2021 |7 nnns |
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10.1007/s00269-012-0525-9 doi (DE-627)SPR003481085 (SPR)s00269-012-0525-9-e DE-627 ger DE-627 rakwb eng Ardit, Matteo verfasserin aut Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2012 Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. Melilite-type structure (dpeaa)DE-He213 Hardystonite (dpeaa)DE-He213 X-ray powder diffraction (dpeaa)DE-He213 Electronic absorption spectroscopy (dpeaa)DE-He213 Local properties of (dpeaa)DE-He213 Co (dpeaa)DE-He213 Cruciani, Giuseppe aut Dondi, Michele aut Enthalten in Physics and chemistry of minerals Berlin : Springer, 1977 39(2012), 9 vom: 20. Juli, Seite 713-723 (DE-627)254639038 (DE-600)1463021-7 1432-2021 nnns volume:39 year:2012 number:9 day:20 month:07 pages:713-723 https://dx.doi.org/10.1007/s00269-012-0525-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 39 2012 9 20 07 713-723 |
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10.1007/s00269-012-0525-9 doi (DE-627)SPR003481085 (SPR)s00269-012-0525-9-e DE-627 ger DE-627 rakwb eng Ardit, Matteo verfasserin aut Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2012 Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. Melilite-type structure (dpeaa)DE-He213 Hardystonite (dpeaa)DE-He213 X-ray powder diffraction (dpeaa)DE-He213 Electronic absorption spectroscopy (dpeaa)DE-He213 Local properties of (dpeaa)DE-He213 Co (dpeaa)DE-He213 Cruciani, Giuseppe aut Dondi, Michele aut Enthalten in Physics and chemistry of minerals Berlin : Springer, 1977 39(2012), 9 vom: 20. Juli, Seite 713-723 (DE-627)254639038 (DE-600)1463021-7 1432-2021 nnns volume:39 year:2012 number:9 day:20 month:07 pages:713-723 https://dx.doi.org/10.1007/s00269-012-0525-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 39 2012 9 20 07 713-723 |
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10.1007/s00269-012-0525-9 doi (DE-627)SPR003481085 (SPR)s00269-012-0525-9-e DE-627 ger DE-627 rakwb eng Ardit, Matteo verfasserin aut Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2012 Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. Melilite-type structure (dpeaa)DE-He213 Hardystonite (dpeaa)DE-He213 X-ray powder diffraction (dpeaa)DE-He213 Electronic absorption spectroscopy (dpeaa)DE-He213 Local properties of (dpeaa)DE-He213 Co (dpeaa)DE-He213 Cruciani, Giuseppe aut Dondi, Michele aut Enthalten in Physics and chemistry of minerals Berlin : Springer, 1977 39(2012), 9 vom: 20. Juli, Seite 713-723 (DE-627)254639038 (DE-600)1463021-7 1432-2021 nnns volume:39 year:2012 number:9 day:20 month:07 pages:713-723 https://dx.doi.org/10.1007/s00269-012-0525-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 39 2012 9 20 07 713-723 |
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10.1007/s00269-012-0525-9 doi (DE-627)SPR003481085 (SPR)s00269-012-0525-9-e DE-627 ger DE-627 rakwb eng Ardit, Matteo verfasserin aut Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2012 Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. Melilite-type structure (dpeaa)DE-He213 Hardystonite (dpeaa)DE-He213 X-ray powder diffraction (dpeaa)DE-He213 Electronic absorption spectroscopy (dpeaa)DE-He213 Local properties of (dpeaa)DE-He213 Co (dpeaa)DE-He213 Cruciani, Giuseppe aut Dondi, Michele aut Enthalten in Physics and chemistry of minerals Berlin : Springer, 1977 39(2012), 9 vom: 20. Juli, Seite 713-723 (DE-627)254639038 (DE-600)1463021-7 1432-2021 nnns volume:39 year:2012 number:9 day:20 month:07 pages:713-723 https://dx.doi.org/10.1007/s00269-012-0525-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 39 2012 9 20 07 713-723 |
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10.1007/s00269-012-0525-9 doi (DE-627)SPR003481085 (SPR)s00269-012-0525-9-e DE-627 ger DE-627 rakwb eng Ardit, Matteo verfasserin aut Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2012 Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. Melilite-type structure (dpeaa)DE-He213 Hardystonite (dpeaa)DE-He213 X-ray powder diffraction (dpeaa)DE-He213 Electronic absorption spectroscopy (dpeaa)DE-He213 Local properties of (dpeaa)DE-He213 Co (dpeaa)DE-He213 Cruciani, Giuseppe aut Dondi, Michele aut Enthalten in Physics and chemistry of minerals Berlin : Springer, 1977 39(2012), 9 vom: 20. Juli, Seite 713-723 (DE-627)254639038 (DE-600)1463021-7 1432-2021 nnns volume:39 year:2012 number:9 day:20 month:07 pages:713-723 https://dx.doi.org/10.1007/s00269-012-0525-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 39 2012 9 20 07 713-723 |
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English |
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Enthalten in Physics and chemistry of minerals 39(2012), 9 vom: 20. Juli, Seite 713-723 volume:39 year:2012 number:9 day:20 month:07 pages:713-723 |
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Enthalten in Physics and chemistry of minerals 39(2012), 9 vom: 20. Juli, Seite 713-723 volume:39 year:2012 number:9 day:20 month:07 pages:713-723 |
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Melilite-type structure Hardystonite X-ray powder diffraction Electronic absorption spectroscopy Local properties of Co |
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Physics and chemistry of minerals |
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Ardit, Matteo @@aut@@ Cruciani, Giuseppe @@aut@@ Dondi, Michele @@aut@@ |
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2012-07-20T00:00:00Z |
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Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. 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Ardit, Matteo |
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Ardit, Matteo misc Melilite-type structure misc Hardystonite misc X-ray powder diffraction misc Electronic absorption spectroscopy misc Local properties of misc Co Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution |
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Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution Melilite-type structure (dpeaa)DE-He213 Hardystonite (dpeaa)DE-He213 X-ray powder diffraction (dpeaa)DE-He213 Electronic absorption spectroscopy (dpeaa)DE-He213 Local properties of (dpeaa)DE-He213 Co (dpeaa)DE-He213 |
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Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution |
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Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution |
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local structural relaxation around $ co^{2+} $ along the hardystonite–co-åkermanite melilite solid solution |
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Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution |
| abstract |
Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. © Springer-Verlag 2012 |
| abstractGer |
Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. © Springer-Verlag 2012 |
| abstract_unstemmed |
Abstract Six pure compounds belonging to the hardystonite ($ Ca_{2} %$ ZnSi_{2} %$ O_{7} $)–Co-åkermanite ($ Ca_{2} %$ CoSi_{2} %$ O_{7} $) solid solution were investigated by the combined application of X-ray powder diffraction and electronic absorption spectroscopy. Structural refinements of the XRPD data revealed a negative excess volume of mixing due to the single isovalent substitution of Co for Zn in the tetrahedral site. In agreement with the diffraction data, deconvolution of the optical spectra showed a progressive decreasing of the crystal field strength parameter 10Dq moving toward the Co-åkermanite end-member, meaning that the local cobalt–oxygen bond distance, %$ \langle {\text{Co}}{-}{\text{O}}\rangle^{\text{local}} %$, increased along the join with the amount of cobalt. The calculated structural relaxation coefficient around the fourfold coordinated $ Co^{2+} $ in the $ Ca_{2} $($ Zn_{1−x} %$ Co_{x} $)$ Si_{2} %$ O_{7} $ join was ε = 0.69, very far from the one predicted by the Vegard’s law (ε = 0) and at variance with ε = 0.47 previously found for tetrahedrally coordinated $ Co^{2+} $ in gahnite–Co-aluminate spinel solid solution. This difference is consistent with the largest constraints existing on the spinel structure, based on cubic closest packing, compared to the more flexible layered melilite structure. © Springer-Verlag 2012 |
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| container_issue |
9 |
| title_short |
Local structural relaxation around $ Co^{2+} $ along the hardystonite–Co-åkermanite melilite solid solution |
| url |
https://dx.doi.org/10.1007/s00269-012-0525-9 |
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| author2 |
Cruciani, Giuseppe Dondi, Michele |
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| doi_str |
10.1007/s00269-012-0525-9 |
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2024-07-03T19:42:51.474Z |
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| score |
7.400819 |