Seeded underlayer in magnetic thin films

Details Seeded underlayer in magnetic thin films Seeded underlayer in magnetic thin films

1996-07-03

1999-01-12

Zirker, Daniel

Stock material or miscellaneous articles

Composite

Of inorganic material

428694TP, 428694TF, 428336, 427128, 427131, 2041922, G11B 564, G11B 566

Patent

active

058585664

ABSTRACT:
A seed layer is deposited under an underlayer in magnetic thin film media. The seed layer material has a similar lattice parameter and a similar crystal structure to the underlayer material. The preferred structure involves a nickel-aluminum seed layer, under a chromium underlayer, under a cobalt-based magnetic layer. Use of the nickel-aluminum seed layer produces higher coercivity and lower media noise in the resultant magnetic thin film. The coercivity and media noise values for the resultant magnetic thin film are dependent upon deposition parameters, and recommended deposition parameters are given.

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NiAl Underlayers for CoCrTa Magnetic Thin Films, Li-Len Lee et al., IEEE Transactions on Magnetics, vol. 30, No. 6, Nov. 1994.
High Coercivity and Low Noise Media Using Glass Substrate, Xiaoxia Tang et al., IEEE Transactions on Magnetics, vol. 30, No. 6, Nov. 1994.

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