DocumentCode
786471
Title
Magnetic properties of SrO·nFe2O3 (0.5<n<6.0) and phase diagram in SrO-Fe2O3 system
Author
Kagotani, T. ; Sugimoto, S. ; Okada, M. ; Homma, M.
Author_Institution
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
Volume
31
Issue
6
fYear
1995
fDate
11/1/1995 12:00:00 AM
Firstpage
3674
Lastpage
3676
Abstract
Ferrite compound of the chemical composition SrO·nFe2 O3 (2.0<n<6) showed high magnetic properties comparable to that of SrO·6Fe2O3 (M-ferrite). The saturation magnetisation Ms is 50~75 emu/g in the range of n=6.0~2.0. Coercive force iHc is 2.4 kOe near n=6.0~6.5 and n=1.5. Furthermore, SrO·nFe2O3 indicated hexagonal (M-type) orthorhombic and tetragonal phases in the range of n=6.5~2.0, 2.0~0.5 and less than 0.5, respectively. The fact means that a new magnetic phase is in existence near n=1.0~2.0. Also, it is never recognized that the compound of chemical formula 3Sr0·2Fe2 O3, which is described in the current phase diagram and have been prevailed for more than two decades, is in existence
Keywords
coercive force; ferrites; magnetic structure; magnetisation; phase diagrams; solid-state phase transformations; strontium compounds; SrO-Fe2O3; SrO-Fe2O3 system; coercive force; ferrite compound; hexagonal; magnetic properties; orthorhombic; phase diagram; saturation magnetisation; tetragonal; Chemical compounds; Coercive force; Ferrimagnetic materials; Ferrites; Magnetic field measurement; Magnetic materials; Magnetic properties; Powders; Saturation magnetization; X-ray diffraction;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.489606
Filename
489606
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