Preparation and Characterization of (0001)-Oriented Single-Crystal Co-alloy Magnetic Thin Films(Special Issue on Recent Progress in Information Storage Technology)

概要

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The effect of a nonmagnetic hcp-underlayer on the epitaxial growth of CoCr19Pt10 magnetic layers on substrates of Al_2O_3(0001) single-crystal has been investigated. Thin films of (0001)-oriented single-crystal CoCr_<19>Pt_<10> were obtained by employing non-magnetic underlayers of CoCr_<25>Ru_<25> and CoCr_<25>Ru_<25>/Ti, while thin films of polycrystalline CoCr_<19>Pt_<10> were grown after the deposition of underlayers of TiCr_<10> and CoCr_<40>. The growth of thin film CoCr_<19>Pt_<10> on a Ti(0001) underlayer was interpreted as quasi-hetero-epitaxial where the continuity of the lattice across the interface is disturbed while the overall crystallographic relationship between the two layers is maintained. A thin film of epitaxially grown CoCr_<19>Pt_<10> has a compositional variation of a few percent across the film plane in terms of elements that forms the alloy.
社団法人電子情報通信学会の論文
2002-10-01