Raman scattering study of Tb(V1-xPx)O4 single crystals

被引：31

作者：

Moura, MR

Ayala, AP

Guedes, I

Grimsditch, M

Loong, CK

Boatner, LA

机构：

[1] Univ Fed Ceara, Dept Fis, BR-60455760 Fortaleza, Ceara, Brazil

[2] Argonne Natl Lab, Argonne, IL 60439 USA

[3] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 03期

关键词：

D O I：

10.1063/1.1640461

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The polarized Raman spectra of a series of isostructural vanadate/phosphate compounds of the form: Tb(V1-xPx)O-4 with 0less than or equal toxless than or equal to0.75 have been investigated at room temperature. While the observed Raman spectra are generally consistent with group theory predictions for a body-centered tetragonal crystal structure (D-4h(19)), due to the replacement of P for V, additional spectral features induced by the disorder of the mixed vanadate/phosphate system are also observed. In particular, all of the external lattice modes are characterized by a one-phonon-like behavior, while the behavior of the internal modes of the (V,P)O-4 tetrahedron is two-phonon-like. (C) 2004 American Institute of Physics.

引用

页码：1148 / 1151

页数：4

共 13 条

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