Soft magnetic properties of Fe-Ni-Nb alloy films.

Study of magnetization reversal phenomena in CoCrTaPt perpendicular recording thin film media in a tilted magnetic field

“…Based on this consideration, magnetization reversal processes in the (CoCrTa) 100Àx Pt x thin films have been studied using Hall analysis, since the addition of Pt in the CoCrbased thin films was reported to have a significant effect in inducing high coercivity, strong magnetocrystalline anisotropy, etc. [2].…”

MAGNETOSTRICTION AND MAGNETIC ANISOTROPY FOR Fe BASED SOFT MAGNETIC FILMS

“…In Fig.1, the change of calculated U with its surface parallel to (110) crystal plane, U(110)' is shown against the lattice strain of (110) and a-40wt%Co-Fe [3] lattices, respectively. U(110) is determined as a summation of intrinsic magneto crystalline anisotropy energy and additional magnetostrictive anisotropy energy due to lattice strain, respectively.…”

“…In almost all films examined by us, fairly large residual lattice strain exists, which is experimentally verified by X-ray diffraction. It is easily expected that magnetic anisotropy energy of one grain, U, changes its magnitude through magnetoelastic effect due to lattice strain [1,2,3]. Therefore, this change of U plays an important role in the magnetization process through the change of local anisotropy fluctuation [3,4].…”

“…In Fig. 3 , coercive force, H , along hard axis for 40Co-Fe-Zr films witb random grain orientation [3] is plotted against the lattice spacing of (110) In Table 11, correlation between lattice strain and local anisotropy fluctuation for all films examined is shown. In this table, gas atmosphere for sputtering, crystal structure and preferred grain orientation are also shown.…”

“…Precise fabrication method for each kind of films are listed in the papers of present authors Fe-Si-AI films [5], 81 Ni-Fe-Nb [6] and 55Ni-Fe-Nb [7] films, Fe-N [1,2], Fe-B-N [8], Fe-C-N [9], Fe-Si-N [2], Fe-Si-B-N [10] films and 40Co-Fe-Zr films [3].…”