DISTRIBUTION OF RELAXATION-TIMES IN PEROVSKITE-TYPE RELAXOR FERROELECTRICS

被引:15
作者
GUI, H
GU, BL
ZHANG, XW
机构
[1] CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA
[2] TSING HUA UNIV,DEPT MAT SCI & ENGN,BEIJING 100084,PEOPLES R CHINA
关键词
D O I
10.1063/1.360231
中图分类号
O59 [应用物理学];
学科分类号
摘要
The distribution of relaxation times in perovskite-type relaxer ferroelectrics is studied by computer simulation. It has been proved that the spectra move to longer relaxation times with the decreasing of temperature and the increasing of the external field. The frequency dispersion of relaxors is explained by a gradual freezing process of polar microregions. The relationship between the time dependence of the polarization and the relaxation time distribution at various temperatures and external fields has been investigated. The macroscopic polarization is suggested to be sustained mainly by frozen dipoles during the observation time. (C) 1995 American Institute of Physics.
引用
收藏
页码:1934 / 1939
页数:6
相关论文
共 31 条
[1]   MONTE-CARLO SIMULATION OF A 3-DIMENSIONAL SPIN GLASS [J].
BINDER, K ;
STAUFFER, D .
PHYSICS LETTERS A, 1976, 57 (02) :177-179
[2]   SPIN-GLASSES - EXPERIMENTAL FACTS, THEORETICAL CONCEPTS, AND OPEN QUESTIONS [J].
BINDER, K ;
YOUNG, AP .
REVIEWS OF MODERN PHYSICS, 1986, 58 (04) :801-976
[3]   PHASE-TRANSITIONS OF A NEAREST-NEIGHBOR ISING-MODEL SPIN GLASS [J].
BINDER, K ;
SCHRODER, K .
PHYSICAL REVIEW B, 1976, 14 (05) :2142-2152
[4]   EFFECTIVE FIELD DISTRIBUTION AND TIME-DEPENDENT ORDER PARAMETERS OF ISING AND HEISENBERG SPIN-GLASSES [J].
BINDER, K .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1977, 26 (04) :339-349
[5]   DISTRIBUTION OF RELAXATION-TIMES IN (KBR)0.5(KCN)0.5 [J].
BIRGE, NO ;
JEONG, YH ;
NAGEL, SR ;
BHATTACHARYA, S ;
SUSMAN, S .
PHYSICAL REVIEW B, 1984, 30 (04) :2306-2308
[6]   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
[7]   CRYSTALLINE FERROELECTRICS WITH GLASSY POLARIZATION BEHAVIOR [J].
BURNS, G ;
DACOL, FH .
PHYSICAL REVIEW B, 1983, 28 (05) :2527-2530
[8]   HREM STUDY OF ORDERED AND DISORDERED STRUCTURES IN PB(SC0.5TA0.5)O3 [J].
CAI, LY ;
ZHANG, XW ;
WANG, XR .
MATERIALS LETTERS, 1994, 20 (3-4) :169-174
[9]   ORDERING STRUCTURE AND DIELECTRIC-PROPERTIES OF UNDOPED AND LA/NA-DOPED PB(MG1/3NB2/3)O3 [J].
CHEN, J ;
CHAN, HM ;
HARMER, MP .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (04) :593-598
[10]   VOGEL-FULCHER SCALING OF THE SUSCEPTIBILITY IN A MIXED-CRYSTAL PROTON GLASS [J].
COURTENS, E .
PHYSICAL REVIEW LETTERS, 1984, 52 (01) :69-72