Abstract: The disclosed magnetic nitride T-M-N film (T is at least one metal selected from the group consisting of Fe, Co, Ni and Mn; M is at least one metal selected from the group consisting of Nb, Zr, Ti, Ta, Hf, Cr, W and Mo; N is nitrogen (N)) has excellent wear resistance and high electric resistivity, and the compositionally modulated nitride film shows a soft magnetic property, as well as thermal stability of the properties.

Abstract: An anisotropic rare earth magnet material is provided by a sputtering technique. The material has structural and magnetic anisotropy. Its composition is represented essentially by the following formula:(R.sub.1-a O.sub.a).sub.b M.sub.1-bwherein R means at least one of rare earth metal elements of Y and the lanthanide series of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu or a combination of Hf and at least one of the foregoing rare earth metal elements, M denotes Co or a combination of Co and at least one of Fe, Cu, Zr, Ti, Al and B, a is not greater than 0.05 (a.ltoreq.0.05), and b ranges from 0.1 to 0.5 (b=0.1-0.5).

Abstract: A Co-based alloy sputter target comprising a f.c.c. phase and a h.c.p. phase, wherein the value of th ratio of X-ray diffraction peak intensity, I.sub.fcc(200) /I.sub.hcp(101), is smaller than the value of the same ratio in a Co-based alloy obtained by cooling a Co-based alloy having a f.c.c. single phase to room temperature from the high temperature at which it is in a melted state.The target is manufactured by subjecting to cold-working treatment a Co-based alloy obtained by cooling a Co-based alloy material having a f.c.c. single phase from its melting temperature.

Abstract: Ferromagnetic material for temperature sensitive elements or parts has a direction of easy magnetization which varies depending upon temperature. The material has the formula:Nd.sub.1-u R.sub.u (Co.sub.1-x M.sub.x).sub.zwherein R is one or more rare earth elements, M is at least one element selected from the group consisting of B, Al, Si, Ti, V, Cr, Mn, Fe, Ni, Cu, Zr, Nb, Ta, Mo, W, Hf, Pd, Sn and Pb, 0.ltoreq.u.ltoreq.0.5, 0<x<0.4 and 4.4.ltoreq.z.ltoreq.5.5.

Abstract: A magnetooptical recording medium comprises a ternary amorphous magnetic alloy of Tb-Fe-Co.

Abstract: An improved amorphous soft magnetic material particularly useful as a thin film for a magnetic recording and reproducing head. The amorphous material has the formula:Co.sub.1-x-y Hf.sub.x Pd.sub.ywherex is in the range from 0.04 to 0.08 andy is in the range from 0.005 to 0.15.The thin film is characterized by a high saturation magnetic flux density and a low saturation magnetostriction constant.

Abstract: A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x,y,z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.