期刊
OPTICAL MATERIALS
卷 29, 期 2-3, 页码 224-230出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2005.09.001
关键词
RPO4; Raman scattering; infrared spectroscopy; monazite
The room-temperature vibrational spectra of the monazite-type rare-earth orthophosphates (RPO4, R = La, Ce, Pr, Nd, Sm, Eu. and Gd) have been investigated using polarized Raman and infrared spectroscopies. As in the case of the previously reported Raman results, we also observe 22 peaks, while only 18 A(g)/B-g vibrations are predicted by group theoretical analysis. Through a careful review of the combined Raman-IR modes, in conjunction with the measured generalized phonon density of states of LaPO4 by neutron spectroscopy and a comparison with the corresponding data for the xenotime RPO4 members, we have obtained a self-consistent assignment of the Raman and IR modes. We also discuss on the possible origins of the previously unidentified extra peaks. (c) 2005 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据