Dielectric relaxation of CsHSeO4 above room temperature

被引：3

作者：

Checa, O. ^{[1
,2
]}

Diosa, J. E. ^{[2
]}

Vargas, R. A. ^{[2
]}

Santamaria, J. ^{[3
]}

机构：

[1] Univ Nacl Columbia, Dept Ciencias Basicas, Palmira, Colombia

[2] Univ Valle, Dept Fis, Cali 25360, Colombia

[3] Univ Complutense, Fac Ciencias Fis, Dept Fis Aplicada, E-28040 Madrid, Spain

来源：

SOLID STATE IONICS | 2009年 / 180卷 / 9-10期

关键词：

Dielectric measurements; Relaxation; Conductivity; SUPERIONIC CONDUCTORS; PHASE-TRANSITIONS; HYDROGEN SULFATE; SINGLE-CRYSTAL; CSHSO4; CONDUCTIVITY; DIFFUSION; H-1-NMR; REGIME;

D O I：

10.1016/j.ssi.2009.03.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dielectric measurements of CsHSeO4 show a distinct relaxation at low frequencies at several isotherms (T < 363 K). For example, the relaxation frequency is around 4 kHz at 323 K and increases to higher frequencies (similar to 100 kHz) as the temperature increases. The relaxation has an activation energy of 0.8 eV. which is in close agreement with that associated with transport of charge carriers. We suggest that the observed dielectric relaxation could be produced by the H+ jump and SeO4-2 reorientation that cause distortion and change the local lattice polarizability, inducing dipoles like HSeO4-. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：673 / 676

页数：4

共 24 条

[1] RF-MICROWAVE DIELECTRIC RELAXATIONS AND PHASE-TRANSITIONS IN SUPERIONIC PROTONIC ACID SULFATES (SELENATES) [J].

BADOT, JC ;

COLOMBAN, P .

SOLID STATE IONICS, 1989, 35 (1-2) :143-149

[2] DIELECTRIC-RELAXATION - A NEW TECHNIQUE TO STUDY PROTONIC TRANSFER IN SUPERIONIC CONDUCTORS [J].

BADOT, JC ;

BAFFIER, N ;

FOURIERLAMER, A ;

COLOMBAN, P .

SOLID STATE IONICS, 1988, 28 :1617-1622

[3]

Badot JC, 1985, J PHYS-PARIS, V48, P1327

[4]

BARANOV AI, 1982, JETP LETT+, V36, P459

[5] SPIN-LATTICE RELAXATION AND SELF-DIFFUSION STUDY OF THE PROTONIC SUPERIONIC CONDUCTORS CSHSEO4 AND CSHSO4 [J].

BLINC, R ;

DOLINSEK, J ;

LAHAJNAR, G ;

ZUPANCIC, I ;

SHUVALOV, LA ;

BARANOV, AI .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1984, 123 (01) :K83-K87

[6] PROTON-TRANSFER AND SUPERIONIC CONDUCTIVITY IN SOLIDS AND GELS [J].

COLOMBAN, P ;

NOVAK, A .

JOURNAL OF MOLECULAR STRUCTURE, 1988, 177 :277-308

[7]

COTTON FA, 1975, ACTA CRYSTALLOGR B, V31, P302, DOI 10.1107/S0567740875002580

[8] Dielectric relaxation studies in Cs2SO4 [J].

Diosa, J. E. ;

Vargas, R. A. ;

Albinsson, I. ;

Mellander, B. -E. .

FERROELECTRICS, 2006, 333 :253-258

[9] Impedance spectroscopy studies of K2SO4 in the intermediate temperature regime [J].

Diosa, JE ;

Vargas, RA ;

Albinsson, I ;

Mellander, BE .

SOLID STATE COMMUNICATIONS, 2005, 136 (11-12) :601-604

[10] Dielectric relaxation in single crystal NH4H2PO4 in the high-temperature regime [J].

Diosa, JE ;

Vargas, RA ;

Albinsson, I ;

Mellander, BE .

SOLID STATE COMMUNICATIONS, 2004, 132 (01) :55-58

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