Large flexoelectric polarization in ceramic lead magnesium niobate

被引：281

作者：

Ma, W ^{[1
]}

Cross, LE ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 26期

关键词：

D O I：

10.1063/1.1426690

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Flexoelectric coefficient mu (12) is greatly enhanced in the relaxor ferroelectric lead magnesium niobate ceramic. Phenomenological analysis suggests the high dielectric permittivity is inadequate to explain the great enhancement. Temperature dependent measurement reveals a close relation between the flexoelectric polarization and the preexisting polar microregions in this relaxor ferroelectrics. It is proposed that the strain gradient might change the Gibbs free energy of the relaxor system and easily reorient the already existing polar microregions, leading to the greatly enhanced flexoelectric effect. (C) 2001 American Institute of Physics.

引用

页码：4420 / 4422

页数：3

共 9 条

[1] GLASSY POLARIZATION BEHAVIOR IN FERROELECTRIC COMPOUNDS PB(MG1/3NB2/3)O3 AND PB(ZN1/3NB2/3)O3 [J].

BURNS, G ;

DACOL, FH .

SOLID STATE COMMUNICATIONS, 1983, 48 (10) :853-856

[2]

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

[3]

KOGAN SM, 1964, SOV PHYS-SOL STATE, V5, P2069

[4] Observation of the flexoelectric effect in relaxor Pb(Mg1/3Nb2/3)O3 ceramics [J].

Ma, WH ;

Cross, LE .

APPLIED PHYSICS LETTERS, 2001, 78 (19) :2920-2921

[5]

Marvan M., 1988, PROGR COLLOID POLYM, V78, P33

[6] NANOSTRUCTURAL-PROPERTY RELATIONS IN COMPLEX LEAD PEROVSKITES [J].

RANDALL, CA ;

BHALLA, AS .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1990, 29 (02) :327-333

[7]

Smolenskii GA, 1970, JPHYSSOCJPN SUPP, V28, P26

[8]

Tagantsev A. K., 1985, Soviet Physics - JETP, V61, P1246

[9] PIEZOELECTRICITY AND FLEXOELECTRICITY IN CRYSTALLINE DIELECTRICS [J].

TAGANTSEV, AK .

PHYSICAL REVIEW B, 1986, 34 (08) :5883-5889

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