Meyer-Neldel rule in amorphous strontium titanate thin films

被引：19
|
作者：
Morii, K [1 ]
Matsui, T [1 ]
Tsuda, H [1 ]
Mabuchi, H [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Met & Sci Mat, Sakai, Osaka 5998531, Japan
来源：
APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 15期
关键词：
D O I：
10.1063/1.1317543
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this letter, we report the experimental result indicating that the electrical conductivity in thin films of amorphous strontium titanate (a-STO) is well fit to the Meyer-Neldel (MN) rule over the temperature range 300-470 K. The films were ion-beam sputtered and annealed in two different atmospheres: a vacuum and flowing oxygen. The MN plots for the films show two parallel straight lines depending on the annealing atmosphere, which give the identical MN parameters of about 35 meV with the conductivity prefactors of 9.3x10(-10) and 2.3x10(-14)(Omega cm)(-1) for the vacuum- and oxygen- annealed films, respectively. (C) 2000 American Institute of Physics. [S0003-6951(00)03941-3].
引用
收藏
页码：2361 / 2363
页数：3
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