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
收藏
页码：41 / 44
页数：4
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