Minor Hysteresis Loops and Bloch Wall Potential in a Fe Single Crystal(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

概要

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The minor hysteresis loops were measured with increasing magnetic field amplitude, Ha, step by step and analyzed in connection with the lattice defects such as dislocations in Fe single crystal. We defined pseudo coercive force H_c^*, susceptibility x_H^* at H_c^*, pseudo hysteresis loss W_F^*, pseudo remanence B_R^*, pseudo remanence work W_R^*, susceptibility X_R^* at B_R^*, and pseudo magnetization B_a^* at Ha in the minor loop. H_c^* is the magnetic field where the magnetization becomes zero in a minor loop. A simple relation, 2H_c^* = H_a, was experimentally obtained in a wide H_a range. These parameters reflect simple Bloch wall potential on the supposition that Bloch walls receive force from the same potential; the potential is the average one of individual Bloch wall. The initial stage of potential is concluded to be irreversible from the magnetic pseudo properties.
社団法人日本物理学会の論文
2004-01-15