Raman study of metallic tungsten bronzes

被引：24

作者：

Scott, J. F. ^{[1
]}

Leheny, R. F.

Remeika, J. P.

Sweedler, A. R.

机构：

[1] Bell Tel Labs, Holmdel, NJ 07733 USA

[2] Bell Tel Labs, Murray Hill, NJ 07974 USA

[3] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW B-SOLID STATE | 1970年 / 2卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.2.3883

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Raman spectra of several metallic tungsten bronzes have been obtained. Cubic Na0.61WO3 exhibits three weak features in the 200-400-cm(-1) region which are correlated with WO3 spectra; hexagonal Rb0.30WO3 displays a single broad feature at 655 cm(-1); tetragonal Na0.28WO3 has a rich spectrum of 11 features. The presence of a low-energy plasma edge in the bronzes, especially of Na0.28WO3, is responsible for the strong signals obtained; in most metals the reflectivity limits Raman scattering to a tiny surface layer for laser frequencies below the uv plasma edge. The plasma frequencies for samples used in the present work are determined by reflectivity measurements on single crystals.

引用

页码：3883 / 3887

页数：5

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