Phase Transitions in Gas-Evaporated WO_3 Microcrystals: A Raman Study
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概要
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Temperature dependence of Raman scattering from gas-evaporated W03 has beeninvestigated. From a comparison between the present Raman data and that of thebulk crystals, it is shown that the phase transition behaviors of the microcrystals arecompletely different from those of the bulk crystals. At room temperature, the possi-ble phase of the microcrystals is the mixture of phases V and Vll of the bulk crystals,which is supported by the X-ray diffraction measurements. At around 230 K, themicrocrvstals xraduallv underzo a r>hase transition, transforminu into a new r>hasenot reported so far or a mixture of phase Vll and the new phase. Possible explana-Lions for the phase mixture based on the size dependence of the Raman spectra aregiven.phase transition, microcrystal, tungsten oxide, Raman scattering
- 社団法人日本物理学会の論文
- 1992-03-15
著者
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Hayashi Shinji
Department Of Electrical And Electronic Engineering Faculty Of Engineering Kobe University
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ARAI HIROSHI
Department of Endocrinology and Metabolism, Kyoto University Graduate School of Medicine
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Sugano Hiroki
Department Of Electronic Engineering Faculty Of Engineering Kobe University
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Yamamoto Keiichi
Department Of Biology Chiba University
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Hayashi Shinji
Department Of Anatomy And Embryology Tokyo Metropolitan Institute For Neuroscience
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Arai Hiroshi
Department Of Electronic Engineering School Of Engineering The University Of Tokyo
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Arai Hiroshi
Department Of Electronic Engineering Faculty Of Engineering Kobe University
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YAMAMOTO Keiichi
Department of Bioengineering, Faculty of Engineering, Soka University
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