INFRARED-ABSORPTION STUDY OF THE OH VIBRATIONAL BAND IN LINBO3 CRYSTALS

被引：115

作者：

KOVACS, L ^{[1
]}

WOHLECKE, M ^{[1
]}

JOVANOVIC, A ^{[1
]}

POLGAR, K ^{[1
]}

KAPPHAN, S ^{[1
]}

机构：

[1] UNIV OSNABRUCK, FACHBEREICH PHYS, W-4500 OSNABRUCK, GERMANY

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1991年 / 52卷 / 06期

关键词：

OXIDE; INFRARED SPECTRAS; LINBO3; DEFECT ABSORPTION; OH STRETCH MODE; ANHARMONIC OSCILLATOR;

D O I：

10.1016/0022-3697(91)90078-E

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Stoichiometry and temperature dependence of the OH vibrational band was studied in LiNbO3 crystals. The decomposition of the bands using the product function of a Lorentzian and a Gaussian showed that in Li deficient crystals the absorption bands consist of at least four components in contrast to more or less perfect stoichiometric crystals which reveal only one to three components. The two new peaks are interpreted by the appearance of two energetically different proton sites in the LiNbO3 structure having ilmenite-like segments. Above 300-degrees-C only one broad band dominates at about 3465 cm-1 indicating the increased mobility of the protons and the interaction with the lattice.

引用

页码：797 / 803

页数：7

共 28 条

[1] DEFECT STRUCTURE DEPENDENCE ON COMPOSITION IN LITHIUM-NIOBATE [J].

ABRAHAMS, SC ;

MARSH, P .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1986, 42 :61-68

[2]

BIRNIE DP, 1988, SPIE, V968, P81

[3] INCORPORATION AND MOBILITY OF OH-IONS IN LINBO3 CRYSTALS [J].

BOLLMANN, W ;

STOHR, HJ .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 39 (02) :477-484

[4] NONSTOICHIOMETRY AND CRYSTAL GROWTH OF LITHIUM NIOBATE [J].

CARRUTHE.JR ;

PETERSON, GE ;

GRASSO, M ;

BRIDENBA.PM .

JOURNAL OF APPLIED PHYSICS, 1971, 42 (05) :1846-+

[5] COMPUTER-SIMULATION STUDIES OF INTRINSIC DEFECTS IN LINBO3 CRYSTALS [J].

DONNERBERG, H ;

TOMLINSON, SM ;

CATLOW, CRA ;

SCHIRMER, OF .

PHYSICAL REVIEW B, 1989, 40 (17) :11909-11916

[6] INFRARED ABSORPTION BY U CENTERS IN CSCL CSBR AND CSI [J].

DOTSCH, H ;

MITRA, SS .

PHYSICAL REVIEW, 1969, 178 (03) :1492-&

[7] OVERTONE SPECTROSCOPY OF THE OH AND OD STRETCH MODES IN LINBO3 [J].

FORSTER, A ;

KAPPHAN, S ;

WOHLECKE, M .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1987, 143 (02) :755-764

[8]

FOSTER A, 1986, SOLID STATE COMMUN, V57, P737

[9] DIELECTRIC THERMAL AND PYROELECTRIC PROPERTIES OF FERROELECTRIC LITAO3 [J].

GLASS, AM .

PHYSICAL REVIEW, 1968, 172 (02) :564-&

[10] OPTICAL STUDY OF STRETCHING ABSORPTION-BAND NEAR 3 MICRONS FROM OH- DEFECTS IN LINBO3 [J].

HERRINGTON, JR ;

DISCHLER, B ;

RAUBER, A ;

SCHNEIDER, J .

SOLID STATE COMMUNICATIONS, 1973, 12 (05) :351-354

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