OXYGEN NONSTOICHIOMETRY OF LA1-XSRXCOO3-DELTA(0-LESS-THANXLESS-THAN-OR-EQUAL-TO-0.6)

被引：89

作者：

PETROV, AN ^{[1
]}

CHEREPANOV, VA ^{[1
]}

KONONCHUK, OF ^{[1
]}

GAVRILOVA, LY ^{[1
]}

机构：

[1] URAL STATE UNIV,DEPT CHEM,51 LENIN AVE,SVERDLOVSK 620083,USSR

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1990年 / 87卷 / 01期

关键词：

D O I：

10.1016/0022-4596(90)90066-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The oxygen nonstoichiometry (δ) of La1-xSrxCoO3-δ (0 < x ≤ 0.6) has been studied as a function of temperature (573-1673 K) and oxygen partial pressure (1-10-3 atm) using TGA and coulometric titration techniques. The absolute values of oxygen nonstoichiometry were determined by the direct reduction in a flux of hydrogen (TGA) or by decreasing PO in a coulometric titration cell. The boundaries of phase stability of La0.7Sr0.3CoO3-δ and (La0.7Sr0.3)2CoO4±v were evaluated. A possible mechanism of disordering processes has been discussed. © 1990.

引用

页码：69 / 76

页数：8

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