Presentation	2004/10/28 Structure and Soft Magnetic Properties of Fe-Co System Films with High Saturation Magnetizarion Kazuhiko SHINTAKU, Saori WATANABE,
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Abstract(in English)	A variety of additives and underlayers were examined to obtain good soft magnetic properties for Fe-Co system films with a high saturation magnetic flux density (B_s) of 2.4 T class. It was found that AL_2O_3 is an excellent material as an additive. The continuous columnar structure of the film is formed by Al_2O_3 segregated in the grain boundaries from the initial growth layer up to the top layer. The small grain in the initial growth and random crystal orientation due to an underlayer are also an important factor to obtain good soft magnetic properties for Fe-Co system films. H_ (H_c in the hard axis direction) less than 1 Oe was obtained by only the combination of Al_2O_3 addition and an fcc structure underlayer film in a wide range of film thicknesses. The mechanism of soft magnetic properties for Fe-Co system films seems to be partially explained by the combination of Hoffman's ripple theory and exchange induced ripple reduction process. However, quantitative discussions are needed for understanding of the origin of soft magnetic properties for this system.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	Fe-Co system films / high saturation magnetic flux density / soft magnetic films / oxide additives / underlayer films
Paper #	MR2004-23
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Conference Information
Committee	MR
Conference Date	2004/10/28(1days)
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Paper Information
Registration To	Magnetic Recording (MR)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Structure and Soft Magnetic Properties of Fe-Co System Films with High Saturation Magnetizarion
Sub Title (in English)
Keyword(1)	Fe-Co system films
Keyword(2)	high saturation magnetic flux density
Keyword(3)	soft magnetic films
Keyword(4)	oxide additives
Keyword(5)	underlayer films
1st Author's Name	Kazuhiko SHINTAKU
1st Author's Affiliation	AIT (Akita Research Institute of Advanced Technology)()
2nd Author's Name	Saori WATANABE
2nd Author's Affiliation	AIT (Akita Research Institute of Advanced Technology)
Date	2004/10/28
Paper #	MR2004-23
Volume (vol)	vol.104
Number (no)	408
Page	pp.pp.-
#Pages	6
Date of Issue