Abstract
The temperature dependence of the initial magnetic susceptibility of a quenched equiatomic FePd alloy with an A1 structure and the variations of its Curie temperature and anisotropy of hysteresis loops have been studied during the ordering annealing of single-crystal samples at 550°C. The micro- and mesostructure, relief patterns, and magnetic-powder patterns on {100} surfaces of the single crystal were studied using electron microscopy and the polarization-optical method. The correlation between the temperature dependence of the magnetic susceptibility and the Curie temperature of the FePd alloy and the peculiarities of its elastically stressed nanocrystalline state during the A1 → L10 transformation is discussed.
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