Raman spectroscopic study of barium fluorapatite

被引：11

作者：

Meegoda, C ^{[1
]}

Bonner, CE ^{[1
]}

Loutts, G ^{[1
]}

Stefanos, S ^{[1
]}

Miller, GE ^{[1
]}

机构：

[1] Norfolk State Univ, Ctr Mat Res, Norfolk, VA 23504 USA

来源：

JOURNAL OF LUMINESCENCE | 1999年 / 81卷 / 02期

基金：

美国国家科学基金会;

关键词：

Raman spectra; phosphate compounds; Davydov splitting; vibrational modes; fluorapatite;

D O I：

10.1016/S0022-2313(98)00055-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The vibrations of phosphate (PO4-3) ions in single crystals of hexagonal Ba-5(PO4)(3)F (B-FAP) have been investigated by means of polarized Raman scattering and compared to Raman frequencies observed in fluoroapatite analogs Sr-5(PO4)(3)F (S-FAP) and Ca-5(PO4)(3)F (FAP). The Raman vibrational frequencies decrease upon substitution of Ba2+ for Sr2+ or Ca2+ in the lattice, asymtotically approaching the Raman frequencies for vibrations of the free ion. Splitting of the vibrational Raman frequencies is also observed. The observed splitting is in accord with predictions made by a group theory analysis of the factor group of the unit cell. The effects of the host lattice environment on the magnitude of the Davydov splittings and frequency shifts of crystals within the fluorapatite structure are demonstrated to be inversely proportional to the unit cell Volume and proportional to the crystal field in the host crystal. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：101 / 109

页数：9

共 19 条

[1]

[Anonymous], 1945, INFRARED RAMAN SPECT

[2] LASER AND SPECTROSCOPIC PROPERTIES OF SR-5(PO4)(3)F-YB [J].

DELOACH, LD ;

PAYNE, SA ;

SMITH, LK ;

KWAY, WL ;

KRUPKE, WF .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (02) :269-276

[3] RAMAN SPECTROSCOPY OF MINERALS [J].

GRIFFITH, WP .

NATURE, 1969, 224 (5216) :264-&

[4] SPECTROSCOPIC CHARACTERISTICS OF ND3+-DOPED STRONTIUM FLUOROVANADATE AND THEIR RELATIONSHIP TO LASER PERFORMANCE [J].

HONG, P ;

ZHANG, XX ;

PEALE, RE ;

WEIDNER, H ;

BASS, M ;

CHAI, BHT .

JOURNAL OF APPLIED PHYSICS, 1995, 77 (01) :294-300

[5] RAMAN AND INFRARED STUDIES OF COUPLED PO4-3 VIBRATIONS [J].

KRAVITZ, LC ;

KINGSLEY, JD ;

ELKIN, EL .

JOURNAL OF CHEMICAL PHYSICS, 1968, 49 (10) :4600-&

[6]

LOUTTS G, 1997, OSA TRENDS OPTICS PH, V1, P34

[7] Crystal growth, spectroscopic characterization, and laser performance of a new efficient laser material Nd:Ba-5(PO4)(3)F [J].

Loutts, GB ;

Bonner, C ;

Meegoda, C ;

Ries, H ;

Noginov, MA ;

Noginova, N ;

Curley, M ;

Venkateswarlu, P ;

Rapaport, A ;

Bass, M .

APPLIED PHYSICS LETTERS, 1997, 71 (03) :303-305

[8]

MATTHEW M, 1979, J SOLID STATE CHEM, V28, P79

[9]

PAYNE S, 1994, J APPL PHYS, V76, P170

[10]

PAYNE S, 1995, IEEE J QUANTUM ELECT, V30, P170

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