Defect induced ferromagnetism in luminescent and doped CdS quantum dots
Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples...
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| Autor*in: |
Sharma, Lalit Kumar [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media New York 2015 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of materials science / Materials in electronics - Springer US, 1990, 26(2015), 10 vom: 03. Juli, Seite 7621-7628 |
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| Übergeordnetes Werk: |
volume:26 ; year:2015 ; number:10 ; day:03 ; month:07 ; pages:7621-7628 |
| Links: |
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| DOI / URN: |
10.1007/s10854-015-3399-z |
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| Katalog-ID: |
OLC2026291993 |
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| 520 | |a Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. | ||
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10.1007/s10854-015-3399-z doi (DE-627)OLC2026291993 (DE-He213)s10854-015-3399-z-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Sharma, Lalit Kumar verfasserin aut Defect induced ferromagnetism in luminescent and doped CdS quantum dots 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2015 Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. Dilute Magnetic Semiconductor Quantum Confinement Effect Room Temperature Ferromagnetism Average Lattice Parameter Significant Blue Shift Inpasalini, M. S. aut Mukherjee, Samrat aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 26(2015), 10 vom: 03. Juli, Seite 7621-7628 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:26 year:2015 number:10 day:03 month:07 pages:7621-7628 https://doi.org/10.1007/s10854-015-3399-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4305 GBV_ILN_4323 AR 26 2015 10 03 07 7621-7628 |
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10.1007/s10854-015-3399-z doi (DE-627)OLC2026291993 (DE-He213)s10854-015-3399-z-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Sharma, Lalit Kumar verfasserin aut Defect induced ferromagnetism in luminescent and doped CdS quantum dots 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2015 Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. Dilute Magnetic Semiconductor Quantum Confinement Effect Room Temperature Ferromagnetism Average Lattice Parameter Significant Blue Shift Inpasalini, M. S. aut Mukherjee, Samrat aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 26(2015), 10 vom: 03. Juli, Seite 7621-7628 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:26 year:2015 number:10 day:03 month:07 pages:7621-7628 https://doi.org/10.1007/s10854-015-3399-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4305 GBV_ILN_4323 AR 26 2015 10 03 07 7621-7628 |
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10.1007/s10854-015-3399-z doi (DE-627)OLC2026291993 (DE-He213)s10854-015-3399-z-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Sharma, Lalit Kumar verfasserin aut Defect induced ferromagnetism in luminescent and doped CdS quantum dots 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2015 Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. Dilute Magnetic Semiconductor Quantum Confinement Effect Room Temperature Ferromagnetism Average Lattice Parameter Significant Blue Shift Inpasalini, M. S. aut Mukherjee, Samrat aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 26(2015), 10 vom: 03. Juli, Seite 7621-7628 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:26 year:2015 number:10 day:03 month:07 pages:7621-7628 https://doi.org/10.1007/s10854-015-3399-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4305 GBV_ILN_4323 AR 26 2015 10 03 07 7621-7628 |
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10.1007/s10854-015-3399-z doi (DE-627)OLC2026291993 (DE-He213)s10854-015-3399-z-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Sharma, Lalit Kumar verfasserin aut Defect induced ferromagnetism in luminescent and doped CdS quantum dots 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2015 Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. Dilute Magnetic Semiconductor Quantum Confinement Effect Room Temperature Ferromagnetism Average Lattice Parameter Significant Blue Shift Inpasalini, M. S. aut Mukherjee, Samrat aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 26(2015), 10 vom: 03. Juli, Seite 7621-7628 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:26 year:2015 number:10 day:03 month:07 pages:7621-7628 https://doi.org/10.1007/s10854-015-3399-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4305 GBV_ILN_4323 AR 26 2015 10 03 07 7621-7628 |
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10.1007/s10854-015-3399-z doi (DE-627)OLC2026291993 (DE-He213)s10854-015-3399-z-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Sharma, Lalit Kumar verfasserin aut Defect induced ferromagnetism in luminescent and doped CdS quantum dots 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2015 Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. Dilute Magnetic Semiconductor Quantum Confinement Effect Room Temperature Ferromagnetism Average Lattice Parameter Significant Blue Shift Inpasalini, M. S. aut Mukherjee, Samrat aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 26(2015), 10 vom: 03. Juli, Seite 7621-7628 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:26 year:2015 number:10 day:03 month:07 pages:7621-7628 https://doi.org/10.1007/s10854-015-3399-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4305 GBV_ILN_4323 AR 26 2015 10 03 07 7621-7628 |
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| author |
Sharma, Lalit Kumar |
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Sharma, Lalit Kumar ddc 600 misc Dilute Magnetic Semiconductor misc Quantum Confinement Effect misc Room Temperature Ferromagnetism misc Average Lattice Parameter misc Significant Blue Shift Defect induced ferromagnetism in luminescent and doped CdS quantum dots |
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600 670 620 VZ Defect induced ferromagnetism in luminescent and doped CdS quantum dots Dilute Magnetic Semiconductor Quantum Confinement Effect Room Temperature Ferromagnetism Average Lattice Parameter Significant Blue Shift |
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ddc 600 misc Dilute Magnetic Semiconductor misc Quantum Confinement Effect misc Room Temperature Ferromagnetism misc Average Lattice Parameter misc Significant Blue Shift |
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ddc 600 misc Dilute Magnetic Semiconductor misc Quantum Confinement Effect misc Room Temperature Ferromagnetism misc Average Lattice Parameter misc Significant Blue Shift |
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Defect induced ferromagnetism in luminescent and doped CdS quantum dots |
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Defect induced ferromagnetism in luminescent and doped CdS quantum dots |
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Sharma, Lalit Kumar |
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Journal of materials science / Materials in electronics |
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Sharma, Lalit Kumar Inpasalini, M. S. Mukherjee, Samrat |
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defect induced ferromagnetism in luminescent and doped cds quantum dots |
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Defect induced ferromagnetism in luminescent and doped CdS quantum dots |
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Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. © Springer Science+Business Media New York 2015 |
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Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. © Springer Science+Business Media New York 2015 |
| abstract_unstemmed |
Abstract This work reports transition metal (TM = Ni, Mn, Fe, Co and Cr) doping of CdS nanoparticles with the generic formula $ Cd_{1-x} $$ TM_{x} $S; x = 0.04 and 0.08 synthesized by chemical co-precipitation method. Polyvinylpyrrolidone was used as surfactant to prevent agglomeration. The samples were characterized with X-ray diffraction (XRD), UV–Vis absorption spectroscopy, photoluminescence and superconducting quantum interference device (SQUID). XRD confirmed the phase purity of the doped samples. Average crystallite size calculated from Debye–Scherrer formula was 2–9 nm. The UV–Vis spectra of the samples show blue shift, revealing strong confinement effect in the nanoparticles. The band gap calculated from UV–Vis spectroscopy lies in the range of 2.81–2.89 eV. The synthesized samples show luminescent emission ranging from 450 to 600 nm in the visible region of the electromagnetic spectrum. SQUID studies at 300 K reveal that $ Cd_{1−x} $$ Ni_{x} $S and $ Cd_{1−x} $$ Mn_{x} $S show paramagnetic behaviour with small nonlinearity for low magnetic field whereas room temperature ferromagnetism was observed for $ Cd_{1−x} $$ Fe_{x} $S, $ Cd_{1−x} $$ Co_{x} $S and $ Cd_{1−x} $$ Cr_{x} $S nanoparticles. © Springer Science+Business Media New York 2015 |
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Defect induced ferromagnetism in luminescent and doped CdS quantum dots |
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