DocumentCode
1190332
Title
Magnetic properties of Fe1.2Ti0.8O3/Fe2O3 bilayered films
Author
Fujii, Tatsuo ; Takada, Yusuke ; Nakanishi, Makoto ; Takada, Jun
Author_Institution
Dept. of Appl. Chem., Okayama Univ., Japan
Volume
41
Issue
10
fYear
2005
Firstpage
2775
Lastpage
2777
Abstract
Hematite-ilmenite (α-Fe2O3-FeTiO3) solid solution system is one of the candidates for high-temperature magnetic semiconductors. The intermediate composition, Fe1.2T0.8O3, is known to have the maximum saturation magnetization at low temperature. We have successfully prepared well-crystallized Fe1.2Ti0.8O3 and Fe1.2Ti0.8O3/Fe2O3 bilayered films by using reactive helicon plasma sputtering. The Fe1.2Ti0.8O3 films without Fe2O3 layers showed lower TC of about 200 K, while the TC of Fe1.2Ti0.8O3 layers in the bilayered films increased to about 220 K. The bilayered films had a sharp interface between Fe1.2Ti0.8O3 and α-Fe2O3. The strong magnetic coupling between two layers seemed to increase the TC of the attached Fe1.2Ti0.8O3 layers.
Keywords
ferrimagnetic materials; iron compounds; magnetic multilayers; magnetic semiconductors; magnetic thin films; magnetisation; sputtering; Fe1.2Ti0.8O3; Fe2O3; bilayered films; ferrimagnetic materials; hematite-ilmenite solid solution system; magnetic coupling; magnetic multilayers; magnetic properties; magnetic semiconductors; magnetic thin films; reactive helicon plasma sputtering; saturation magnetization; Couplings; Iron; Magnetic films; Magnetic properties; Magnetic semiconductors; Plasma temperature; Saturation magnetization; Semiconductor films; Solids; Sputtering; Exchange coupling; iron titanium oxides; magnetic semiconductor; sputtered film;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2005.854820
Filename
1519118
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