DEVIATION FROM CURIE-WEISS BEHAVIOR IN RELAXOR FERROELECTRICS

被引：536

作者：

VIEHLAND, D

JANG, SJ

CROSS, LE

WUTTIG, M

机构：

[1] UNIV ILLINOIS,DEPT MAT SCI & ENGN,URBANA,IL 61801

[2] PENN STATE UNIV,MAT RES LAB,UNIV PK,PA 16802

[3] UNIV MARYLAND,DEPT MAT & NUCL ENGN,COLL PK,MD 20742

[4] PENN STATE UNIV,DEPT ELECT ENGN,UNIV PK,PA 16802

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.46.8003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The deviation from Cure-Weiss behavior has been investigated in lead magnesium niobate relaxor ferroelectrics. At high temperatures, the susceptibility was found to follow the Curie-Weiss relationship. A Curie constant and temperature of 1.2 x 10(5) and 398 K, respectively, were obtained. With decreasing temperature the deviation was found to increase. It is proposed that this deviation arises due to short-range correlations between polar regions, and that these correlations at high temperatures are the precursor to a freezing of the polarization fluctuations into a glassy state. A local (glassy) order parameter was calculated from the susceptibility by analogy to spin glasses [D. Sherrington and S. Kirkpatrick, Phys. Rev. Lett. 35, 1972 (1975)]. These results are compared to the rms polarization [G. Burns and F. Dacol, Solid State Commun. 48, 853 (1983)] and to the measured remanent polarization. The frequency and field dependence has also been investigated.

引用

页码：8003 / 8006

页数：4

共 23 条

[11] LOW-TEMPERATURE SPECIFIC-HEATS OF SOME PLZT CERAMICS [J].

LAWLESS, WN .

FERROELECTRICS, 1977, 15 (1-2) :61-67

[12] HIGH-TEMPERATURE SUSCEPTIBILITY OF THE CUMN SPIN-GLASS [J].

MORGOWNIK, AFJ ;

MYDOSH, JA .

PHYSICAL REVIEW B, 1981, 24 (09) :5277-5283

[13]

NAGATA S, 1979, PHYS REV B, V19, P1533

[14]

NEEL L, 1949, CR HEBD ACAD SCI, V228, P664

[15]

PAN W, 1988, J AM CERAM SOC, V71, pC17

[16]

Randall C., 1990, J MATER SCI, V29, P5

[17] DEVIATIONS FROM CURIE-WEISS BEHAVIOR IN SPIN-GLASSES [J].

RAO, KV ;

FAHNLE, M ;

FIGUEROA, E ;

BECKMAN, O ;

HEDMAN, L .

PHYSICAL REVIEW B, 1983, 27 (05) :3104-3107

[18]

ROLOV R, 1965, SOV PHYS-SOLID STATE, V6, P1676

[19]

SHERRINGTON D, 1975, PHYS REV LETT, V35, P1972

[20]

Smolenskii G., 1970, J PHYS SOC JPN, V28, P26

← 1 2 3 →