Lattice vibrations of AVO4 crystals (A = Lu, Yb, Dy, Tb, Ce)

被引：23

作者：

Jindal, Ruby ^{[1
]}

Sinha, M. M. ^{[1
]}

Gupta, H. C. ^{[2
]}

机构：

[1] St Longowal Inst Engn & Technol Longowal, Dept Phys, Sangrur 148106, Punjab, India

[2] Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 113卷

关键词：

Raman spectra; Infrared spectra; Phonons; Lattice dynamics; Orthovanadates; RAMAN;

D O I：

10.1016/j.saa.2013.05.005

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A short range force constant model has been applied using normal coordinates to investigate the Raman and the infrared wavenumbers in rare earth AVO(4) compounds (A = Lu, Yb, Dy, Tb, Ce) having space group I4(1)/a and symmetry C-4h(6). The calculation of zone center phonons has been made by using four stretching and five bending force constants. The calculated Raman and infrared wavenumbers are in very good agreement with the observed ones. The present calculations interpret reasonably the mode assignment of 779 cm(-1) as E-g mode and 853 cm(-1) as A(g) mode in case of LuVO4, which were assigned differently in earlier observation. The potential energy distribution has also been investigated for determining the significance of contribution from each force constant toward the Raman and the infrared wavenumbers. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：286 / 290

页数：5

共 14 条

[1]

Alka B., 2009, J APPL PHYS, V106

[2]

Boatner L.A., 1980, Scientific Basis for Nuclear Waste Management, P289

[3] RAMAN AND OPTICAL-ABSORPTION STUDIES OF THE PRESSURE-INDUCED ZIRCON TO SCHEELITE STRUCTURE TRANSFORMATION IN TBVO4 AND DYVO4 [J].

DUCLOS, SJ ;

JAYARAMAN, A ;

ESPINOSA, GP ;

COOPER, AS ;

MAINES, RG .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1989, 50 (08) :769-775

[4] In situ high-pressure synchrotron x-ray diffraction study of CeVO4 and TbVO4 up to 50 GPa [J].

Errandonea, D. ;

Kumar, R. S. ;

Achary, S. N. ;

Tyagi, A. K. .

PHYSICAL REVIEW B, 2011, 84 (22)

[5] High-pressure structural investigation of several zircon-type orthovanadates [J].

Errandonea, D. ;

Lacomba-Perales, R. ;

Ruiz-Fuertes, J. ;

Segura, A. ;

Achary, S. N. ;

Tyagi, A. K. .

PHYSICAL REVIEW B, 2009, 79 (18)

[6] Phonons at the zone center for α-NaAlH4 [J].

Gupta, H. C. ;

Tripathi, Upendra .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2006, 67 (12) :2536-2541

[7] Investigation of the phase stability of LuVO4 at high pressure using powder x-ray diffraction measurements and lattice dynamical calculations [J].

Mittal, R. ;

Garg, Alka B. ;

Vijayakumar, V. ;

Achary, S. N. ;

Tyagi, A. K. ;

Godwal, B. K. ;

Busetto, E. ;

Lausi, A. ;

Chaplot, S. L. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (07)

[8]

Miyazawa S, 2003, OPTO-ELECTRON REV, V11, P77

[9] Structural investigations of several LnVO(4) compounds [J].

Mullica, DF ;

Sappenfield, EL ;

Abraham, MM ;

Chakoumakos, BC ;

Boatner, LA .

INORGANICA CHIMICA ACTA, 1996, 248 (01) :85-88

[10] Zircon to monazite phase transition in CeVO4: X-ray diffraction and Raman-scattering measurements [J].

Panchal, V. ;

Lopez-Moreno, S. ;

Santamaria-Perez, D. ;

Errandonea, D. ;

Manjon, F. J. ;

Rodriguez-Hernandez, P. ;

Munoz, A. ;

Achary, S. N. ;

Tyagi, A. K. .

PHYSICAL REVIEW B, 2011, 84 (02)

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