USE OF THE THERMAL LENS EFFECT AT TC = 855K IN BA2NANB5O15 TO MEASURE ORDER PARAMETER EVOLUTION

被引：6

作者：

SCOTT, JF

SHEIH, SJ

CHEN, T

机构：

[1] Department of Physics, University of Colorado, Boulder

来源：

FERROELECTRICS | 1991年 / 117卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/00150199108222400

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By measuring the beam divergence Ѳ(T) as a function of temperature in the recently discovered thermal lens effect in ferroelectrics (J. F. Scott et al., Phys. Rev. B, in press, 1989), we have been able to determine preliminary values of the critical exponent ß. We find that 2B= 0.50 + 0.05 in agreement with mean field predictions. We also find an unexpected deviation from mean field within ~ 5K of T~. This is probably due to defect mechanisms and agrees quantitatively with birefringence results elsewhere (E. Salje, U. Bismayer, and M. Jansen, J. Phys. C20, 3613 (1987); I. G. Wood and A. M. Glazer, J. Appl. Cryst. 13, 217 (1980)). © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：21 / 25

页数：5

共 14 条

[1] THERMAL SELF-ACTIONS OF LASER BEAMS [J].

AKHMANOV, SA ;

KRINDACH, DP ;

MIGULIN, AV ;

SUKHORUKOV, AP ;

KHOKHLOV, RV .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1968, QE 4 (10) :568-+

[2]

AKHMANOV SA, 1966, ZH EKSP TEOR FIZ, V50, P1537

[3]

AKHMANOV SA, 1967, JETP LETT, V6, P509

[4] THERMALLY SELF-INDUCED PHASE MODULATION OF LASER BEAMS [J].

DABBY, FW ;

GUSTAFSON, TK ;

WHINNERY, JR ;

KOHANZADEH, Y ;

KELLEY, PL .

APPLIED PHYSICS LETTERS, 1970, 16 (09) :362-+

[5] OBSERVATION OF CRITICAL INDEXES OF PRIMARY AND SECONDARY ORDER PARAMETERS USING BIREFRINGENCE [J].

GEHRING, GA .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (04) :531-542

[6]

GORDON JP, 1965, J APPL PHYS, V34, P3

[7]

LEVANYUK AP, 1979, ZH EKSP TEOR FIZ+, V76, P345

[8] TEMPERATURE EVOLUTION OF THE FERROELASTIC ORDER PARAMETER OF AS2O5 AS DETERMINED FROM OPTICAL BIREFRINGENCE [J].

SALJE, E ;

BISMAYER, U ;

JANSEN, M .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (24) :3613-3620

[9]

Scott J. F., 1987, Nonlinearity in Condensed Matter. Proceedings of the Sixth Annual Conference, P320

[10]

SCOTT JC, UNPUB PHYS REV B

← 1 2 →