Far Infrared Spectra in (As_2Se_3)_<1-x>(Sb_2Se_3)_x Glasses
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概要
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Far infrared reflectivity spectra in (As_2Se_3)_<1-x(Sb_2Se_3)_x(0<__-x<__-0.4) glasses were studied in the spectral region 80-500 cm^<-1> at room temperature. Two-mode type behavior of the dominant modes observed in the spectra is shown to be characterized quite well by the local vibrations of As-Se_3 and Sb-Se_3 pyramidal molecular units. The oscillator strength for the Sb-Se_3 unit is ca. 2.5 times larger than that for the As-Se_3. unit. Predominance of heterobonding and valency conservation for the elements are deduced from this study. The effective charge e^* for the dominant mode of the Sb-Se_3 unit is calculated to be ca. 3.70e which is about 1.7 times larger than that of the As-Se_3 unit. The stretching force constants K_<AS-Se and K_<Sb-Se> were calculated to be ∼1.77 and ∼1.65×10^5 dyns/cm, respectively.
- 社団法人応用物理学会の論文
- 1981-11-05
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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