Mn-Al thin films with the composition of 31-68 at.% Mn were prepared by rf magnetron sputtering at various substrate temperatures then annealed in vacuum. Effects of the chemical composition, substrate temperature and annealing temperature on the magnetic properties of Mn-Al films have been investigated. The analysis of X-ray diffraction and magnetic measurement indicate that /spl tau/-phase was synthesized at a composition range of 40-60 at.% Mn. However, the formation of large amount of /spl tau/-phase occurred for Mn/sub 50/-Al/sub 50/ films, which have a high coercivity up to about 3000 Oe and a fairly large saturation magnetization of about 420 emu/cc.>
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Huang et al. (1995) studied this question.
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