The uniaxial magnetization of epitaxial permalloy (001) films on Cu/Si(001)

概要

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Epitaxial Permalloy film is grown on Cu/Si(001). The buffer layer of Cu (001)(1×1) can be stabilized on the unreconstructed (1×1) surface mesh of Si (001) by simply rotating 45゜to reduce the lattice mismatch, and a Si(001)〓2×〓2R45゜-Cu surface is therefore resulted. The structure of permalloy (Py) is face center cubic (FCC) with lattice parameter close to FCC-Cu, thus, the Py mesh can sit directly on the top of reconstructed Cu(001)/Si(001) surface to form FCC-Py(001) epitaxy. The Py(001) film is found to be magnetized in the plane with the easy and hard magnetic axes parallel to Py[010], and Py[100], respectively. The in-plane uniaxial behavior could be due to the small lattice mismatch which breaks the 4-fold symmetry.
社団法人電子情報通信学会の論文
2000-11-09