Abstract
fcc-Fe/Cu(Au) artificial superlattices were prepared on Cu (001) by an MBE method. The interatomic distance of fcc-Fe is controlled by means of epitaxial growth on Cu(Au) alloy layers in multilayered films. The epitaxial growth and artificial periodicity of films were examined by RHEED and X-ray diffraction, and the saturation magnetization of films was measured. All fcc-Fe/Cu(Au) films show ferromagnetism with a T c above room temperature (400 to 580K). The magnetic moment per Fe atom increases up to 2.5 to 2.7 ?B with increasing interatomic distance.
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