| 摘要 |
PURPOSE:To obtain a ferromagnetic thin film which has high saturation density, excellent anticorrosion and a nearly zero magnetostriction constant by controlling the quantity of Co, Ni, Ru, Rh, Pd, Os, Ir or Pt added to a main component Fe. CONSTITUTION:An added element is at least one kind of total 0.1 atom % or more and if the content of each element is (a)-(h) weight % respectively, a ferromagnetic thin film is made by adding a required element uniformly to Fe by sputtering by controlling to satisfy Formula I or Formula II. The obtained film has high magnetic saturation density, excellent anticorrosion and a nearly zero magnetostriction constant. If this film is used for a magnetic head for VTR and the like, excellent recording and play back characteristics can be obtained. Further, if this film is made a main magnetic film 1, the other composition magnetic film or a non-magnetic film 2 is made an intermediate layer and these films are alternately laminated, an excellent magnetic film which has small coercive force and high permeability can be obtained.
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