Far Infrared and Raman Spectra in (As_2S_3)_<1-x>(Sb_2S_3)_x Glasses
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概要
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The far infrared reflection and Raman spectra of (As_2S_3)_<1-x>(Sb_2S_3)x glasses (0≤x≤0.6) were measured in the spectral region 60〜600 cm^<-1> at room temperature. Two-mode type behaviors of the dominant modes originating from the local vibrations of AsS_3 and SbS_3 pyramidal units were observed. The infrared and Raman dominant mode frequencies of g-Sb_2S_3 are 270 cm^<-1> and 297 cm^<-1>, respectively. The optical constants were calculated by Kramers-Kronig analysis, and were also analyzed by the classical oscillators model. The effective charges of the AsS_3 and SbS_3 pyramidal units were calculated. The force constants were calculated using Gordy's model, Somayajulu's model and also by the general valence force field method. The dependence of the infrared and Raman dominant modes on the composition x shows that hetero-bondings (chemical ordering) and therefore pyramidal units are predominant in this system.
- 社団法人応用物理学会の論文
- 1983-09-20
著者
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ONARI Seinosuke
Institute of Applied Physics, The University of Tsukuba
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KATO Michio
Institute of Applied Physics, The University of Tsukuba
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ARAI Toshihiro
Institute of Applied Physics, The University of Tsukuba
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Kato Michio
Institute Of Applied Physics The University Of Tsukuba
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Arai Toshihiro
Institute Of Applied Physics The University Of Tsukuba
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Arai Toshihiro
Institute For Optical Research Kyoiku University
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Onari Seinosuke
Institute For Optical Research Tokyo University Of Education
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Arai Toshihiro
Institte For Optical Research Kyoiku University
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