Electrical conductivities of the Ag6PS5X and the Cu6PSe5X (X=Br, I) argyrodites

被引：43
|
作者：
Beeken, RB [1 ]
Garbe, JJ [1 ]
Gillis, JM [1 ]
Petersen, NR [1 ]
Podoll, BW [1 ]
Stoneman, MR [1 ]
机构：
[1] Univ Wisconsin, Dept Phys & Astron, Stevens Point, WI 54481 USA
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2005年 / 66卷 / 05期
关键词：
ionic conduction; phase transitions;
D O I：
10.1016/j.jpcs.2004.10.010
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The Ag6PS5Br and Ag6PS5I argyrodites crystallize in a face-centered-cubic lattice at room temperature. Both compounds exhibit purely Arrhenius behavior throughout the temperature range 150-400 K with similar activation energies of about 0.23 eV. Cu6PSe5Br and Cu6PSe5I also crystallize in a face-centered-cubic structure at room temperature. Cu6PSe5Br exhibits a distinctive anomaly in electrical conductivity near 286 K while Cu6PSe5I undergoes a first-order electrical phase transition near 265 K. Their activation energies above room temperature are 0.13 and 0.30 eV, respectively. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：882 / 886
页数：5
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