DIELECTRIC DISPERSIONS OF MIXED-CRYSTALS RB1-X(NH4)XH2PO4 AND RB1-X(ND4)XD2PO4

被引：21
|
作者：
HE, P
DEGUCHI, K
HIROKANE, M
NAKAMURA, E
机构：
[1] Department of Materials Science, Faculty of Science, Hiroshima University
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 05期
关键词：
dielectric dispersion; effect of deuteration; glass state; Rb1-x(NH4)xH2PO4; Vogel-Fulcher;
D O I：
10.1143/JPSJ.59.1835
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Dielectric dispersions in mixed crystals Rb1-x(NH4)xH2PO4 (RADP, x=0.35) and Rb1-x(ND4)xD2PO4 (D-RADP, x=0.35) were studied around their glass-freezing temperatures. The complex dielectric constants along the a- and c-axes have consistently been described by the Vogel-Fulcher law of the relaxation time τ=τ0exp {E/(T-T0)} with a Gaussian distribution of the energy parameter E around the mean value E0. The values of τ0, T0 and E0 of D-RADP are several times as large as those of RADP. No appreciable anisotropic character was found between the dispersions along the a- and c-axes in both RADP and D-RADP. © 1990, The Physical Society of Japan. All rights reserved.
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页码：1835 / 1840
页数：6
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