OH- vibrational band in YVO4 crystals

被引：8
作者：
Kovács, L
Erdei, S
Capelletti, R
机构：
[1] Hungarian Acad Sci, Crystal Phys Lab, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
[2] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA
[3] Univ Parma, Dipartimento Fis, Ist Nazl Fis Mat, I-43100 Parma, Italy
来源：
SOLID STATE COMMUNICATIONS | 1999年 / 111卷 / 02期
基金：
匈牙利科学研究基金会;
关键词：
insulators; point defects; light absorption and reflection;
D O I：
10.1016/S0038-1098(99)00165-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
An infrared absorption band at about 3307 cm(-1) was detected and attributed to the 0 --> 1 stretching vibrational transition of hydroxyl ions (OH-) in yttrium orthovanadate (YVO4) single crystals. The isotopic replica (OD-) was found at about 2455 cm(-1) confirming the above assignment. The Morse-potential model was applied to determine the anharmonicity parameters of the hydroxyl vibration. Polarization measurements showed that the OH- dipoles lay in the plane perpendicular to the tetragonal axis. The temperature dependence of the band parameters was analysed using the model of weakly coupled phonons. (C) 1999 Elsevier Science Ltd. All rights reserved.
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页码：95 / 99
页数：5
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