Raman scattering study of η-Na_(1.3)V_2O_5 in the charge disordered and ordered phases

Z.V. Popovic; V.V. Moshchalkov; M. Isobe; Y. Ueda

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Raman scattering study of η-Na_(1.3)V_2O_5 in the charge disordered and ordered phases

机译：电荷无序和有序相中η-Na_（1.3）V_2O_5的拉曼散射研究

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Polarized Raman spectra of sodium vanadium oxide η-Na_(1.3)V_2O_5 single crystals were measured over wide temperature and frequency ranges. In total 27 first-order Raman modes, as well as overtones and combinational lines, are observed. For the charge ordered phase no appearances of new phonon- or spin-related Raman modes are registered on lowering the temperature to 10 K. The phase transition at about 100 K is manifested through an abrupt change of the phonon mode frequencies and dampings.

机译：在较宽的温度和频率范围内测量了钒钒酸钠η-Na_（1.3）V_2O_5单晶的偏振拉曼光谱。总共观察到27个一阶拉曼模式以及泛音和组合线。对于电荷有序的相，在将温度降低到10 K时，没有出现新的与声子或自旋相关的拉曼模式的出现。大约100 K的相变通过声子模式频率和阻尼的突然变化来体现。

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来源
《Solid State Communications》 |2007年第7期|p.385-388|共4页
作者
Z.V. Popovic; V.V. Moshchalkov; M. Isobe; Y. Ueda;
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作者单位

Center for Solid State Physics and New Materials, Institute of Physics, Pregrevica 118, 11080 Belgrade, Serbia;

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原文格式 PDF
正文语种 eng
中图分类固体物理学;
关键词
A. Vanadates; D. Order-disorder effects; E. Raman spectroscopy;

机译：A.钒酸盐;D。秩序混乱效应;E.拉曼光谱;

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Raman scattering study of η-Na_(1.3)V_2O_5 in the charge disordered and ordered phases

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