National Taiwan Ocean University Institutional Repository:Item 987654321/27506
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题名: Raman scattering investigations of the low-temperature phase transition of NaNbO3
作者: S. J. Lin;D. P. Chiang;Y. F. Chen;C. H. Peng;H. T. Liu;J. K. Mei;W. S. Tse;T.-R. Tsai;H.-P. Chiang
贡献者: NTOU:Institute of Optoelectronic Sciences
國立臺灣海洋大學:光電科學研究所
关键词: crystal growth;lattice vibrational modes;sodium niobate (NaNbO3) ceramics
日期: 2006-12
上传时间: 2011-10-21T02:32:00Z
出版者: Journal of Raman Spectroscopy
摘要: Abstract:In this work, we report the low-temperature phase transition of sodium niobate (NaNbO3) ceramics at the antiferroelectric–ferroelectric phase studied by the Raman scattering technique over the temperature range 10–300 K. The spectral shape indicates that the phase transition occurs at 160 K on the cooling cycle and at 260 K on heating. The recorded spectra are discussed following the separation of modes into the internal stretching modes of the NbO6 octahedron and Na+ cation translational modes. The 62 and 75 cm−1 peaks are proposed as the translational modes of Na+ cation against the NbO6 octahedron.
關聯: 37(12), pp.1442-1446
URI: http://ntour.ntou.edu.tw/handle/987654321/27506
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