Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC
Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-p...
Ausführliche Beschreibung
Autor*in: |
Xu, Qiang [verfasserIn] Zhou, Yanchun [verfasserIn] Zhang, Haiming [verfasserIn] Jiang, Anna [verfasserIn] Tao, Quanzheng [verfasserIn] Lu, Jun [verfasserIn] Rosén, Johanna [verfasserIn] Niu, Yunhui [verfasserIn] Grasso, Salvatore [verfasserIn] Hu, Chunfeng [verfasserIn] |
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Sprache: |
Englisch |
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2020 |
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Enthalten in: Journal of Advanced Ceramics - Berlin : SpringerOpen, 2012, 9(2020), 4 vom: 27. Juli, Seite 481-492 |
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Übergeordnetes Werk: |
volume:9 ; year:2020 ; number:4 ; day:27 ; month:07 ; pages:481-492 |
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DOI / URN: |
10.1007/s40145-020-0391-8 |
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Katalog-ID: |
SPR04051501X |
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520 | |a Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. | ||
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700 | 1 | |a Hu, Chunfeng |e verfasserin |4 aut | |
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10.1007/s40145-020-0391-8 doi (DE-627)SPR04051501X (SPR)s40145-020-0391-8-e DE-627 ger DE-627 rakwb eng 660 ASE Xu, Qiang verfasserin aut Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. V (dpeaa)DE-He213 SnC (dpeaa)DE-He213 new MAX phase compound (dpeaa)DE-He213 crystal structure (dpeaa)DE-He213 first-principles calculations (dpeaa)DE-He213 Zhou, Yanchun verfasserin aut Zhang, Haiming verfasserin aut Jiang, Anna verfasserin aut Tao, Quanzheng verfasserin aut Lu, Jun verfasserin aut Rosén, Johanna verfasserin aut Niu, Yunhui verfasserin aut Grasso, Salvatore verfasserin aut Hu, Chunfeng verfasserin aut Enthalten in Journal of Advanced Ceramics Berlin : SpringerOpen, 2012 9(2020), 4 vom: 27. Juli, Seite 481-492 (DE-627)726491497 (DE-600)2682430-9 2227-8508 nnns volume:9 year:2020 number:4 day:27 month:07 pages:481-492 https://dx.doi.org/10.1007/s40145-020-0391-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2020 4 27 07 481-492 |
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10.1007/s40145-020-0391-8 doi (DE-627)SPR04051501X (SPR)s40145-020-0391-8-e DE-627 ger DE-627 rakwb eng 660 ASE Xu, Qiang verfasserin aut Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. V (dpeaa)DE-He213 SnC (dpeaa)DE-He213 new MAX phase compound (dpeaa)DE-He213 crystal structure (dpeaa)DE-He213 first-principles calculations (dpeaa)DE-He213 Zhou, Yanchun verfasserin aut Zhang, Haiming verfasserin aut Jiang, Anna verfasserin aut Tao, Quanzheng verfasserin aut Lu, Jun verfasserin aut Rosén, Johanna verfasserin aut Niu, Yunhui verfasserin aut Grasso, Salvatore verfasserin aut Hu, Chunfeng verfasserin aut Enthalten in Journal of Advanced Ceramics Berlin : SpringerOpen, 2012 9(2020), 4 vom: 27. Juli, Seite 481-492 (DE-627)726491497 (DE-600)2682430-9 2227-8508 nnns volume:9 year:2020 number:4 day:27 month:07 pages:481-492 https://dx.doi.org/10.1007/s40145-020-0391-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2020 4 27 07 481-492 |
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10.1007/s40145-020-0391-8 doi (DE-627)SPR04051501X (SPR)s40145-020-0391-8-e DE-627 ger DE-627 rakwb eng 660 ASE Xu, Qiang verfasserin aut Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. V (dpeaa)DE-He213 SnC (dpeaa)DE-He213 new MAX phase compound (dpeaa)DE-He213 crystal structure (dpeaa)DE-He213 first-principles calculations (dpeaa)DE-He213 Zhou, Yanchun verfasserin aut Zhang, Haiming verfasserin aut Jiang, Anna verfasserin aut Tao, Quanzheng verfasserin aut Lu, Jun verfasserin aut Rosén, Johanna verfasserin aut Niu, Yunhui verfasserin aut Grasso, Salvatore verfasserin aut Hu, Chunfeng verfasserin aut Enthalten in Journal of Advanced Ceramics Berlin : SpringerOpen, 2012 9(2020), 4 vom: 27. Juli, Seite 481-492 (DE-627)726491497 (DE-600)2682430-9 2227-8508 nnns volume:9 year:2020 number:4 day:27 month:07 pages:481-492 https://dx.doi.org/10.1007/s40145-020-0391-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2020 4 27 07 481-492 |
allfieldsGer |
10.1007/s40145-020-0391-8 doi (DE-627)SPR04051501X (SPR)s40145-020-0391-8-e DE-627 ger DE-627 rakwb eng 660 ASE Xu, Qiang verfasserin aut Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. V (dpeaa)DE-He213 SnC (dpeaa)DE-He213 new MAX phase compound (dpeaa)DE-He213 crystal structure (dpeaa)DE-He213 first-principles calculations (dpeaa)DE-He213 Zhou, Yanchun verfasserin aut Zhang, Haiming verfasserin aut Jiang, Anna verfasserin aut Tao, Quanzheng verfasserin aut Lu, Jun verfasserin aut Rosén, Johanna verfasserin aut Niu, Yunhui verfasserin aut Grasso, Salvatore verfasserin aut Hu, Chunfeng verfasserin aut Enthalten in Journal of Advanced Ceramics Berlin : SpringerOpen, 2012 9(2020), 4 vom: 27. Juli, Seite 481-492 (DE-627)726491497 (DE-600)2682430-9 2227-8508 nnns volume:9 year:2020 number:4 day:27 month:07 pages:481-492 https://dx.doi.org/10.1007/s40145-020-0391-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2020 4 27 07 481-492 |
allfieldsSound |
10.1007/s40145-020-0391-8 doi (DE-627)SPR04051501X (SPR)s40145-020-0391-8-e DE-627 ger DE-627 rakwb eng 660 ASE Xu, Qiang verfasserin aut Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. V (dpeaa)DE-He213 SnC (dpeaa)DE-He213 new MAX phase compound (dpeaa)DE-He213 crystal structure (dpeaa)DE-He213 first-principles calculations (dpeaa)DE-He213 Zhou, Yanchun verfasserin aut Zhang, Haiming verfasserin aut Jiang, Anna verfasserin aut Tao, Quanzheng verfasserin aut Lu, Jun verfasserin aut Rosén, Johanna verfasserin aut Niu, Yunhui verfasserin aut Grasso, Salvatore verfasserin aut Hu, Chunfeng verfasserin aut Enthalten in Journal of Advanced Ceramics Berlin : SpringerOpen, 2012 9(2020), 4 vom: 27. Juli, Seite 481-492 (DE-627)726491497 (DE-600)2682430-9 2227-8508 nnns volume:9 year:2020 number:4 day:27 month:07 pages:481-492 https://dx.doi.org/10.1007/s40145-020-0391-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2020 4 27 07 481-492 |
language |
English |
source |
Enthalten in Journal of Advanced Ceramics 9(2020), 4 vom: 27. Juli, Seite 481-492 volume:9 year:2020 number:4 day:27 month:07 pages:481-492 |
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660 ASE Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC V (dpeaa)DE-He213 SnC (dpeaa)DE-He213 new MAX phase compound (dpeaa)DE-He213 crystal structure (dpeaa)DE-He213 first-principles calculations (dpeaa)DE-He213 |
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Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC |
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Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. |
abstractGer |
Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. |
abstract_unstemmed |
Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. The mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR04051501X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230519075355.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201007s2020 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s40145-020-0391-8</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR04051501X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s40145-020-0391-8-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">660</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Xu, Qiang</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Theoretical prediction, synthesis, and crystal structure determination of new MAX phase compound $ V_{2} $SnC</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2020</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Guided by the theoretical prediction, a new MAX phase $ V_{2} $SnC was synthesized experimentally for the first time by reaction of V, Sn, and C mixtures at 1000 °C. The chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and high resolution scanning transmission electron microscopy (HR-STEM). The stacking sequence of $ V_{2} $C and Sn layers results in a crystal structure of space group $ P6_{3} $/mmc. The a- and c-lattice parameters, which were determined by the Rietveld analysis of powder XRD pattern, are 0.2981(0) nm and 1.3470(6) nm, respectively. The atomic positions are V at 4f (1/3, 2/3, 0.0776(5)), Sn at 2d (2/3, 1/3, 1/4), and C at 2a (0, 0, 0). A new set of XRD data of $ V_{2} $SnC was also obtained. Theoretical calculations suggest that this new compound is stable with negative formation energy and formation enthalpy, satisfied Born-Huang criteria of mechanical stability, and positive phonon branches over the Brillouin zone. It also has low shear deformation resistance c44 (second-order elastic constant, cij) and shear modulus (G), positive Cauchy pressure, and low Pugh’s ratio (G/B = 0.500 < 0.571), which is regarded as a quasi-ductile MAX phase. 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