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- W2013560057 abstract "Abstract The formation and stability of the L1 0 phase in Mn–Ga binary alloys with compositions in the range 50–75 at% Mn (in steps of 5 at%) has been studied. Of these, single-phase L1 0 structure was successfully produced in the 55, 60 and 65 at% Mn alloys by annealing the high temperature phases, which had been retained to room temperature following arc melting. Further annealing and thermal analysis were used to determine the phase transformation temperatures in the alloys and the results were used to guide further processing. The saturation magnetisation, M s , and the anisotropy field, H a , were determined in applied fields up to 14 T. For Mn 55 Ga 45 , µ 0 M s =0.807 T and µ 0 H a =4.4 T were observed. Mechanically milled Mn 55 Ga 45 powder had coercivity of µ 0 H c =0.393 T, which was a twentyfold increase compared to the bulk material but the magnetisation was reduced ( cf. powder: µ 0 M 5 T =0.576 T, bulk: µ 0 M 5 T =0.780 T). Annealing the powder at 400 °C led to recovery of the magnetisation but reduced the coercivity, which was still 10 times as high as the bulk value. A degree of texture of 0.45 was achieved by magnetic alignment of the powder particles, leading to a remanence of 0.526 T. Furthermore, isotropic hot compacts of powders were produced with packing density from 83% to 99%, in which the improved coercivity of the powders was partially retained." @default.
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- W2013560057 date "2015-10-01" @default.
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- W2013560057 title "Formation and magnetic properties of the L10 phase in bulk, powder and hot compacted Mn–Ga alloys" @default.
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- W2013560057 doi "https://doi.org/10.1016/j.jmmm.2015.04.097" @default.
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