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|標題:||Modulating the Magneto-Crystalline Anisotropy and the Exchange Bias Field in CoFe/(Co,Fe)O Bilayers Using Ion-Beam Bombardment and Single Crystalline Substrates||作者:||C.Shueh
|關鍵字:||Exchange bias;ion-beam modification||Project:||IEEE TRANSACTIONS ON MAGNETICS, Volume 48, Issue 11, Page(s) 2892-2895.||摘要:||
We report the effects of ion-beam bombardment on the room temperature and low temperature magnetic properties of ferromagnetic
CoFe/antiferromagnetic (Co,Fe)O thin film bilayers. The films were deposited onto amorphous SiO and single crystalline MgO (110)/
(100) substrates.Magnetometry showed that ion-beam bombardment was capable ofmodifying the coercivity and loop shape for the thin
film system at room temperature, corresponding to alteration of the effective magneto-crystalline anisotropy field. After field cooling to
50 K, a shifted hysteresis loop was seen for those films containing a proportion of the antiferromagnetic rock-salt (Co,Fe)O phase, with an
exchange bias magnitude that depended on the ion-beam bombardment conditions. Our results indicate that matching the substrate with
appropriate ion-bombardment conditions provides a promising way to engineer selectively two important types of magnetic anisotropy
in ferromagnetic/antiferromagnetic bilayers: magneto-crystalline and exchange bias.
|Appears in Collections:||材料科學與工程學系|
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