Universal scaling of the conductivity relaxation in crystalline ionic conductors

被引：48

作者：

Leon, C ^{[1
]}

Lucia, ML ^{[1
]}

Santamaria, J ^{[1
]}

Sanchez-Quesada, F ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.57.41

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present complex admittance measurements on single-crystal yttria-stabilized zirconia and polycrystalline Li0.5La0.5TiO3 over the frequency range 5 Hz to 30 MHz and at temperatures ranging between 150 and 650 K. Electric-field relaxation in both fast ionic conductors can be described using Kohlrausch-Williams-Watts decay functions, but departures are observed at high frequencies and low temperatures. Electric modulus data obey the Dixon-Nagel scaling that has been proposed to be universal in describing the relaxation processes in supercooled liquids. Our data provide broader universality to the Dixon-Nagel scaling, and are interpreted in terms of the influence of mobile ions positional disorder on the relaxation dynamics.

引用

页码：41 / 44

页数：4

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