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

页码：2488 / 2494

页数：7