Abstract
The magnetization reversal process is an intrinsic property of NdMn0.8Fe0.2O3 single crystal below TN = 59.5 K for magnetization field-cooled regime. The phenomenon is very anisotropic and a negative magnetization was observed below the compensation temperature TComp = 21.7(1) K; 25.9(1) K and 22.7(1) K for a-; b- and c-axis and field 0.01 T. Magnetocrystalline anisotropy results in different shape of hysteresis loop for any crystallographic orientation below TN. Ferromagnetic behavior, attributed to ordering of Nd sublattice, with coercive field of 1.32 T at temperature T = 2 K is typical for magnetic field applied along b-axis. Signature of ferromagnetic ordering exists even at 30 K. Very low hysteresis was observed in a–c plane and the a-axis magnetization loop has butterfly shape. A model of two Nd and Mn interpenetrating magnetic sublattices describes magnetization reversal better than a cluster model.
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