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arXiv 0810.5445cond-mat.mtrl-sci
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(K,Na)NbO3和((K,Na)1- xLix)NbO3的拉曼光谱

Raman spectroscopy of (K,Na)NbO3 and ((K,Na)1-xLix)NbO3

H. J. Trodahl, N. Klein, D. Damjanovic, N. Setter, B. Ludbrook, D. Rytz, M. Kuball

摘要:

拉曼散射光谱研究报告通过所有四个阶段的(K0.5Na0.5)NbO 3晶体和((K0.5Na0.5)1-xLix)NbO 3的x=0.02和0.03。在无锂晶体的铁电相之间的过渡是均匀的,强烈的滞后,没有证据的混合相区域之间的菱形和斜方晶相。在Li掺杂材料中的最低温度相中的拉曼图案与x=0时发现的拉曼图案显著不同,并且表明对于小于2%的Li浓度存在结构相边界。

英文摘要:

A Raman scattering spectroscopy study is reported through all four phases of a (K0.5Na0.5)NbO3 crystal and ((K0.5Na0.5)1-xLix)NbO3 for x=0.02 and 0.03. The transitions among the ferroelectric phases in the Li-free crystal are homogeneous and strongly hysteretic, with no evidence of a mixed-phase region between the rhombohedral and orthorhombic phases. The Raman pattern in the lowest-temperature phase in the Li-doped material differs significantly from that found for x=0 and suggest a structural phase boundary exists at for a Li concentration of less than 2%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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