ON THE LIMIT OF ALUMINUM SUBSTITUTION IN FE3O4 AND GAMMA-FE2O3

被引：12

作者：

GILLOT, B

ROUSSET, A

机构：

[1] CNRS,LDE,F-31055 TOULOUSE,FRANCE

[2] UNIV TOULOUSE 3,CHIM MAT INORGAN LAB,CNRS,JE,F-31055 TOULOUSE,FRANCE

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1990年 / 118卷 / 01期

关键词：

Aluminum Substitution - Lattice Parameters - Magnetite - Spinels;

D O I：

10.1002/pssa.2211180141

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

E. Wolska and coworkers have reported that magnetite (Fe3O4) can form solid solutions with hercynite (FeAl2O4) only within the region of Fe3O4-Fe2.70Al0.30O4 and that for oxidized phases in cation deficient spinels, the limit of aluminum substitution in γ-(Fe1-yAly)2O3 was about y = 0.10. This differs from the authors results which have established that the substitution of Fe3+ by Al3+ in Fe3-xAlxO4 is possible up to x = 2 and in γ-(Fe1-yAly)2O3 up to y = 0.66. In view of this they the synthesis of aluminum substituted magnetities via a metal-organic precursor method, present measurements of the lattice parameter and infrared investigations of Al-magnetites and Al-maghemites and discuss the differences observed in terms of limits of Al substitution.

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页码：K5 / K8

页数：4

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