New Oxygen-Deficient Perovskite La(Al0.5Zn0.5)O2.75: Synthesis, Structure, and Transport Properties

被引：5
|
作者：
Egorova, A. V. [1 ,2 ]
Belova, K. G. [1 ,2 ]
Animitsa, I. E. [1 ,2 ]
机构：
[1] Yeltsin Ural Fed Univ, Ekaterinburg 620002, Russia
[2] Russian Acad Sci, Ural Branch, Inst High Temp Electrochem, Ekaterinburg 620219, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2020年 / 94卷 / 12期
关键词：
perovskite; lanthanum alumina zinc; structure; conductivity;
D O I：
10.1134/S0036024420120092
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：
The solid-phase synthesis of oxygen-deficient perovskite La(Al0.5Zn0.5)O-2.75 is performed for the first time. The perovskite crystallizes in space group Pm3m with a lattice parameter of 3.7932 angstrom. The cationic composition of the phase is confirmed via chemical analysis. It is shown that lanthanum alumina zincate has a mixed type of conductivity in the region of high oxygen partial pressures and temperatures above 500 degrees C, while oxygen-ion transport predominates at temperatures below 400 degrees C. Introducing zinc into the B-sublattice of perovskite allows high-density ceramics (>95%) to be obtained.
引用
收藏
页码：2488 / 2494
页数：7
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