Kinetics of garnet formation in In super(3+)-substituted systems

Kinetics of solid-state reactions were investigated in Fe sub(2)O sub(3)-Y sub(2)O sub(3)-In sub(2)O sub(3) system from 700 to 1400 degree C by X-ray and by DTG/M/ methods. Mutual diffusion of iron and indium ions into each others oxide lattices was the first interaction, resulting in a gradual expa...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2000-01, Vol.215, p.188-193
Main Authors: Sztaniszlav, Anna, Farkas-Jahnke, M, Balla, M
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Kinetics of solid-state reactions were investigated in Fe sub(2)O sub(3)-Y sub(2)O sub(3)-In sub(2)O sub(3) system from 700 to 1400 degree C by X-ray and by DTG/M/ methods. Mutual diffusion of iron and indium ions into each others oxide lattices was the first interaction, resulting in a gradual expansion or contraction of the two oxide lattices, respectively. On increasing the temperature the Y sub(2)O sub(3) reacted with the indium-containing Fe sub(2)O sub(3) and formed garnet through orthoferrite intermediates with a continuous incorporation of the indium below 1200 degree C. Significant differences appeared in the feature of the solid-state reactions above 1200 degree C depending on the stoichiometry because of the stabilizing effect of the iron ion diffusion in the In sub(2)O sub(3) lattice.
ISSN:0304-8853