Fe—Co—Al alloy magnetic thin film
AssigneesThe Board of Trustees of The University of Alabama, TDK Corporation
InventorsTakao Suzuki, Tim Mewes, Gary Mankey, Isao Kanada, Yusuke Ariake
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Abstract
An Fe—Co—Al alloy magnetic thin film contains, in terms of atomic ratio, 20% to 30% Co and 1.5% to 2.5% Al. The Fe—Co—Al alloy magnetic thin film has a crystallographic orientation such that the (100) plane is parallel to a substrate surface and the <100> direction is perpendicular to the substrate surface. The Fe—Co—Al alloy magnetic thin film has good magnetic properties, that is, a magnetization of 1440 emu/cc or more, a coercive force of less than 100 Oe, a damping factor of less than 0.01, and an FMR linewidth ΔH at 30 GHz of less than 70 Oe.
Claims13
An Fe—Co—Al alloy magnetic thin film disposed on a surface of a substrate, the Fe—Co—Al magnetic thin film comprising, in terms of atomic ratio based on a total amount of Fe, Co, and Al:
- 20% to 30% Co;
- 1.5% to 2.5% Al;
- and
- a balance of Fe;
- the Fe—Co—Al alloy magnetic thin film having a crystallographic orientation such that a (100) plane is parallel to the surface of the substrate and a <100>direction is perpendicular to the surface of the substrate.
Dependencies are inferred from the claim text.