Optical Phonons in Ferroelectric-Semiconductor Zn_<0.8>Li_<0.2>O Single Crystal Studied by Micro-Raman Scattering : Condensed Matter: Electronic Properties, etc.
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概要
- 論文の詳細を見る
Micro-probed Raman scattering spectra of ferroelectric.-semiconductor Zn_<0.8>Li_<0.2< O single crystal have been observed as a function of temperature for several scattering geometries. The crystal orientation of the small single crystal has been determined by an angular dependence study of the peak intensity of the spectra at room temperature. Observed peak frequencies are in agreement with those of the pure ZnO wurtzite crystal. Though the shape of the Raman spectra does not change extremely near the phase transit,ion temperature, the temperature dependence of the peak position shows a small cusp like anomaly. In the low frequency region, no new modes or mode softening were observed. These results indicate that the ferroelectric-phase transit,ion in Zn_<0.8>Li_<0.2>O system is induced by the electronic origin rather than the ionic instability.
- 社団法人日本物理学会の論文
- 2001-02-15
著者
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SAKAI Akira
Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University
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Onodera Akira
Department of Physics, Faculty of Science, Hokkaido University
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Sakai A
Deportment Of Electrical And Electronic Engineering Muroran Institute Of Technology
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ISLAM Ehtesanul
Deportment of Electrical and Electronic Engineering, Muroran Institute of Technology
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ISLAM Ehtesanul
Department of Electrical and Electronic Engineering, Muroran Institute of Technology
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Onodera Akira
Department Of Molecular Life Science Tokai University School Of Medicine
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Islam Ehtesanul
Deportment Of Electrical And Electronic Engineering Muroran Institute Of Technology
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Sakai A
Department Of Hematology And Oncology Division Of Clinical Research Research Institute For Radiation
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Sakai Akira
Department Of Agricultural Chemistry The University Of Tokyo
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