A thermogravimetric study of the phase diagram of strontium cobalt iron oxide, SrCo0.8Fe0.2O3-delta

被引：132

作者：

Liu, LM ^{[1
]}

Lee, TH ^{[1
]}

Qiu, L ^{[1
]}

Yang, YL ^{[1
]}

Jacobson, AJ ^{[1
]}

机构：

[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

来源：

MATERIALS RESEARCH BULLETIN | 1996年 / 31卷 / 01期

关键词：

D O I：

10.1016/0025-5408(95)00147-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase diagram of the nonstoichiometric oxide SrCo0.8Fe0.2O3-delta has been determined as a function of temperature (550 degrees C less than or equal to T less than or equal to 900 degrees C) and oxygen partial pressure (0.015 atm less than or equal to pO(2) less than or equal to 1 atm) by thermogravimetric analysis. Two phases are observed, perovskite and brownmillerite, separated by a two phase region. Above 770 degrees C only the phase with the perovskite structure is stable. Over the range of conditions studied, the perovskite phase has maximum and minimum oxygen contents of 3-delta = 2.65 (550 degrees C, pO(2) = 1 atm) and 3-delta = 2.43 (850 degrees C, pO(2) = 5 x 10(-4) atm), respectively.

引用

页码：29 / 35

页数：7

共 20 条

[1]

[Anonymous], UNPUB

[2] THE CRYSTAL AND MAGNETIC-STRUCTURES OF SR2COFEO5 [J].