Magnetic State of Quasiordered Fe–Al Alloys Doped with Ga and B: Magnetic Phase Separation and Spin Order

Physics of the Solid State(2018)

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Abstract
Results of structural, magnetic, and Mössbauer studies of quasi ordered alloys Fe 65 Al 35 − x M x ( M x = Ga, B; x = 0, 5 at %) are presented. The magnetic state of examined structurally–single-phase alloys at low temperatures is interpreted from the viewpoint of magnetic phase separation. An explanation is proposed for the observed behavior of magnetic characteristics of Fe 65 Al 35 and Fe 65 Al 30 Ga 5 in the framework of the model of two magnetic phases, a ferromagnetic-type one and a spin density wave. The boron-doped alloy Fe 65 Al 30 B 5 is shown to demonstrate behavior that is typical of materials with the ferromagnetic type of ordering.
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Key words
magnetic phase separation,fe–al alloys,quasiordered fe–al,spin
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