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EPR study of CdIn₂S₄ Kerr, Richard Kelso
Abstract
Properties of CdIn₂S₄ have been studied using EPR. The temperature dependence of the hyperfine interaction for Mn²⁺ impurities has been measured over the range 1 °K - 450 °K. The results have been interpreted using both the localized vibration model and the interaction with the phonon continuum. The g-tensor for Co²⁺ dopants has been determined, yielding g[sub ⊥] = 4.07 ±.15, g₁₁ = 6.00 ±.05 with the distortion axes along the four <111> directions. Both Mn²⁺ and Co²⁺ have a preference to substitute at a "B" site in the crystal. A 'conduction electron' signal that is dependent on the sulphur vacancy concentration has been observed with an isotropic g = 1.68 ±.005. The g-value for a resonance ascribed to surface states was found to be 1.70. Strain experiments indicate that the band gap is most probably a direct one. Preliminary studies of production of sulphur vacancies by heat treatment and light excitation of electrons have been performed.
Item Metadata
Title |
EPR study of CdIn₂S₄
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1971
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Description |
Properties of CdIn₂S₄ have been studied using EPR. The temperature
dependence of the hyperfine interaction for Mn²⁺ impurities has been
measured over the range 1 °K - 450 °K. The results have been interpreted
using both the localized vibration model and the interaction with the
phonon continuum. The g-tensor for Co²⁺ dopants has been determined,
yielding g[sub ⊥] = 4.07 ±.15, g₁₁ = 6.00 ±.05 with the distortion axes along
the four <111> directions. Both Mn²⁺ and Co²⁺ have a preference to substitute at a "B" site in the crystal. A 'conduction electron' signal that is dependent on the sulphur vacancy concentration has been observed with an isotropic g = 1.68 ±.005. The g-value for a resonance ascribed to surface states was found to be 1.70. Strain experiments indicate that the band gap is most probably a direct one. Preliminary studies of production of sulphur vacancies by heat treatment and light excitation of electrons have been performed.
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Genre | |
Type | |
Language |
eng
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Date Available |
2011-03-22
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0302428
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.