DIELECTRIC STUDY OF RB0.75(ND4)0.25D2ASO4

被引：29

作者：

KUTNJAK, Z ^{[1
]}

LEVSTIK, A ^{[1
]}

FILIPIC, C ^{[1
]}

PIRC, R ^{[1
]}

TADIC, B ^{[1
]}

BLINC, R ^{[1
]}

KABELKA, H ^{[1
]}

FUITH, A ^{[1
]}

WARHANEK, H ^{[1
]}

机构：

[1] UNIV VIENNA, INST EXPTL PHYS, A-1090 VIENNA, AUSTRIA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1991年 / 3卷 / 01期

关键词：

D O I：

10.1088/0953-8984/3/1/007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The complex dielectric constant of Rb0.75(ND4)0.25D2AsO4 along the tetragonal crystallographic c axis has been measured as a function of temperature for frequencies between 100 Hz and 1 MHz. The dielectric relaxation is described using a Frohlich-type distribution function. The expressions for epsilon' and epsilon" are evaluated on this basis and fitted to the experimental data. The characteristic central frequency f-epsilon obeys an Arrhenius law and the relaxation process is polydispersive. Below the freezing temperature T(f) = 68.9 K the dielectric intensity-epsilon(0) - epsilon(infinity) is decreasing with decreasing temperature and its temperature dependence can be described by the replica-symmetry-breaking solution of the infinite range Ising spin glass model in the presence of random fields.

引用

页码：91 / 96

页数：6

共 9 条

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