Microheterogeneity and relaxation in 0.65Pb(Mg1/3Nb2/3)O3-0.35PbTiO3 relaxor single crystals

被引：50

作者：

Jiang, FM ^{[1
]}

Kojima, S ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 09期

关键词：

D O I：

10.1063/1.1289909

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Micro-Brillouin scattering has been applied to the observation of the microheterogeneity and the fast relaxation of 0.65 Pb(Mg1/3Nb2/3)O-3-0.35PbTiO(3) single crystals in various microareas with the size of 1-2 mu m. Cubic-tetragonal at TC-T and tetragonal-rhombohedral around TT-R transitions show different types of acoustic anomalies. It was found that local symmetry varies from one microarea to others below TC-T. Intense quasielastic scattering was observed below 250 degrees C; it is correlated with thermally activated fast relaxations of polar microregions. The results show that microheterogeneity and related dynamics of polar microregions are origins of relaxor phase transitions and are responsible for macroscopic properties like hypersonic damping. (C) 2000 American Institute of Physics. [S0003- 6951(00)00835-4].

引用

页码：1271 / 1273

页数：3

共 14 条

[1] Microscopic Brillouin scattering study of relaxation phenomena in low molecular weight alcohols of ethanol and methanol [J].

Ahart, M ;

Jiang, FM ;

Mikami, M ;

Park, IS ;

Kojima, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1999, 38 (5B) :3058-3061

[2]

CROSS LE, 1987, FERROELECTRICS, V76, P241, DOI 10.2109/jcersj.99.829

[3]

CUMMINS HZ, 1983, LIGH SCATTERING NEAR

[4] Polarization rotation mechanism for ultrahigh electromechanical response in single-crystal piezoelectrics [J].

Fu, HX ;

Cohen, RE .

NATURE, 2000, 403 (6767) :281-283

[5] Evidence for domain-type dynamics in the ergodic phase of the PbMg1/3Nb2/3O3 relaxor ferroelectric [J].

Glazounov, AE ;

Tagantsev, AK ;

Bell, AJ .

PHYSICAL REVIEW B, 1996, 53 (17) :11281-11284

[6]

JIANG FM, IN PRESS PHYS REV B

[7] Materials science - Shape-changing crystals get shiftier [J].

Service, RF .

SCIENCE, 1997, 275 (5308) :1878-1878

[8] DIELECTRIC BEHAVIOR OF SINGLE-CRYSTALS NEAR THE (1-X) PB(MG1/3NB2/3)O3-(X) PBTIO3 MORPHOTROPIC PHASE-BOUNDARY [J].

SHROUT, TR ;

CHANG, ZP ;

KIM, NC ;

MARKGRAF, S .

FERROELECTRICS LETTERS SECTION, 1990, 12 (03) :63-69

[9]

Smolenskii GA, 1970, JPHYSSOCJPN SUPP, V28, P26

[10] INTERNAL STRAIN RELAXATION AND THE GLASSY BEHAVIOR OF LA-MODIFIED LEAD ZIRCONATE TITANATE RELAXORS [J].

VIEHLAND, D ;

JANG, SJ ;

CROSS, LE ;

WUTTIG, M .

JOURNAL OF APPLIED PHYSICS, 1991, 69 (09) :6595-6602

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