摘要 |
PURPOSE:To enhance corrosion resistance of an antiferromagnetic thin film 57 composed of an Fe-Mn-X alloy containing 0.1-20atm.% of third alloy element X (which enhances corrosion resistance of Fe-Mn alloy) which contacts with a permalloy thin film 51 thus preventing Barkhausen noise of a magnetoresistive effect element 50. CONSTITUTION:An element X is selected from a group of Ir, Ru, Zr, Nb, Si, Ge, V, Co, Hf, Pt and Pd. Ir of 4-15atm.% admixture or Ru of 5.5-15atm.% admixture is particularly preferable as the element X. Corrosion resistance is enhanced furthermore when one or more elements, selected from Ru, Rh, Pt, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Ni, Cu, Al, Si and Ge, are admixed. |