Abstract

Effects of CO adsorption on the magnetic properties of Fe films on Cu(001) were studied at $100\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ as a function of the film thickness. CO adsorption does not affect the magnetic property of 2 ML Fe film but induces the spin reorientation from out-of-plane to in-plane magnetization for 3 and 4 ML films. It also causes the decrease of magnetization, which can be attributed to the reduction in surface magnetization. Fe films of 6 and 8 ML lose their magnetization by CO adsorption. Possible interpretations for these complicated magnetic behaviors are discussed.

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