NMR and the spherical random bond-random field model of relaxor ferroelectrics

被引：21

作者：

Blinc, R ^{[1
]}

Dolinsek, J ^{[1
]}

Gregorovic, A ^{[1
]}

Zalar, B ^{[1
]}

Filipic, C ^{[1
]}

Kutnjak, Z ^{[1
]}

Levstik, A ^{[1
]}

Pirc, R ^{[1
]}

机构：

[1] Univ Ljubljana, Jozef Stefan Inst, Ljubljana 1001, Slovenia

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2000年 / 61卷 / 02期

关键词：

glasses; dielectric properties; ferroelectricity; nuclear magnetic resonance; phase transitions;

D O I：

10.1016/S0022-3697(99)00279-6

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To determine the nature of the relaxer state and, in particular, to discriminate between a ferroelectric state broken up into nanodomains under the constraint of quenched random fields and a glassy state we have measured the temperature dependences of the nonlinear dielectric susceptibility in zero field as well as the temperature dependence of the local polarization distribution function and the Edwards-Anderson order parameter in PMN single crystal via Nb-93 NMR. The experimental results can be quantitatively described by the newly proposed Spherical Random Bond-Random Field model of relaxer ferroelectrics. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：177 / 183

页数：7

共 21 条

[1]

Abragam A., 1970, PRINCIPLES NUCL MAGN

[2] LOCAL-POLARIZATION DISTRIBUTION IN DEUTERON GLASSES [J].

BLINC, R ;

DOLINSEK, J ;

PIRC, R ;

TADIC, B ;

ZALAR, B ;

KIND, R ;

LIECHTI, O .

PHYSICAL REVIEW LETTERS, 1989, 63 (20) :2248-2251

[3]

BLINC R, IN PRESS

[4] LONG-TIME RELAXATION OF THE DIELECTRIC RESPONSE IN LEAD MAGNONIOBATE [J].

COLLA, EV ;

KOROLEVA, EY ;

OKUNEVA, NM ;

VAKHRUSHEV, SB .

PHYSICAL REVIEW LETTERS, 1995, 74 (09) :1681-1684

[5] RELAXOR FERROELECTRICS: AN OVERVIEW [J].

Cross, L. Eric .

FERROELECTRICS, 1994, 151 (01) :305-320

[6]

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

[7] A STRUCTURAL MODEL FOR THE RELAXOR PBMG1/3NB2/3O3 AT 5-K [J].

DEMATHAN, N ;

HUSSON, E ;

CALVARIN, G ;

GAVARRI, JR ;

HEWAT, AW ;

MORELL, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1991, 3 (42) :8159-8171

[8] SPHERICAL MODEL OF A SPIN-GLASS [J].

KOSTERLITZ, JM ;

THOULESS, DJ ;

JONES, RC .

PHYSICAL REVIEW LETTERS, 1976, 36 (20) :1217-1220

[9] Slow dynamics and ergodicity breaking in a lanthanum-modified lead zirconate titanate relaxor system [J].

Kutnjak, Z ;

Filipic, C ;

Pirc, R ;

Levstik, A ;

Farhi, R ;

El Marssi, M .

PHYSICAL REVIEW B, 1999, 59 (01) :294-301

[10] Glassy freezing in relaxor ferroelectric lead magnesium niobate [J].

Levstik, A ;

Kutnjak, Z ;

Filipic, C ;

Pirc, R .

PHYSICAL REVIEW B, 1998, 57 (18) :11204-11211

← 1 2 3 →