Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1998-03-02
1999-12-07
Kiliman, Leszek
Stock material or miscellaneous articles
Composite
Of inorganic material
428694TS, 428694TM, 428900, 427128, 427129, 427130, 427131, 2041922, G11B 566
Patent
active
059980486
ABSTRACT:
The invention is embodied in an anisotropic, soft magnetic thin film article comprising a cobalt-iron-chromium-nitrogen (Co--Fe--Cr--N) alloy. The thin film is formed such that the alloy has a relatively high saturation magnetization (4.pi.M.sub.s), e.g., greater than approximately 8 kilogauss (kG), a relatively low coercivity (H.sub.c), e.g., less than approximately 2.0 oersteds (Oe), a relatively high squareness ratio (M.sub.r /M.sub.s), e.g., greater than approximately 0.90, and a relatively high anisotropy field (H.sub.k), e.g., greater than approximately 20 Oe, in an as-deposited condition or, alternatively, with a relatively low temperature treatment, e.g., below approximately 300.degree. Celsius. The inventive films are suitable for use in electromagnetic devices, e.g., in microtransformer cores, inductor cores and in magnetic read-write heads.
REFERENCES:
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Jin Sung-ho
Klemmer Timothy J.
Tiefel, deceased Thomas Henry
van Dover Robert Bruce
Zhu Wei
Harman John M.
Kiliman Leszek
Lucent Technologies - Inc.
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