TEMPERATURE-DEPENDENT RAMAN-SCATTERING STUDIES OF LI0.02NA0.98NBO3

被引：24

作者：

JUANG, YD ^{[1
]}

HU, ML ^{[1
]}

TSE, WS ^{[1
]}

机构：

[1] NATL SUN YAT SEN UNIV,DEPT PHYS,KAOHSIUNG,TAIWAN

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 06期

关键词：

D O I：

10.1063/1.357403

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Raman studies of Li0.02Na0.98NbO3 ceramics were observed in the temperature range between 10 and 300 K. The spectral pattern evolves gradually at a transition temperature (130-170 K) in the cooling process and then changes suddenly near 280 K on heating. The observed thermal hysteresis of 110 K and also the transition temperatures agree well with evidence coming from the differential scanning calorimetric, the dielectric constant, and the thermal expansion measurements. The observed spectra are discussed following the separation of modes into internal stretching modes of the NbO6 octehedron and cation translation modes. The 62- and 74-cm(-1) peaks are proposed due to the translational modes of Na+ cation.

引用

页码：3746 / 3748

页数：3

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