Papers by Keyword: Magnetization Process

Abstract: The objective of this work has been to analyze the high-temperature behavior of magnetically single-and biphase microwires because of its interest from fundamental and applications viewpoints. Two alloy compositions with amorphous structure covered by glass have been prepared as magnetically single phase microwires by quenching & drawing technique: CoFe-based with near zero saturation magnetostriction constant and Fe-based with positive saturation magnetostriction constant. The same wires were used as the core for magnetically biphase microwires. Second CoNi phase was deposited by electroplating. Magnitudes as saturation magnetization and hysteresis parameters are determined in the temperature range from room temperature up to 1200 K. We proceed to a comparative analysis of their magnetic behaviour at different temperatures as well as after cooling down to room temperature. Information on the Curie temperature of different phases and on the influence of heating process on the magnetic properties is thus derived.

Abstract: Theoretical analysis of peculiarities of electric polarization arising on magnetic non – homogeneity in bilayered structure with interlayer antiferromagnetic coupling has been performed. It has been shown that the total electric polarization can be of the positive and of the negative sign or equal to zero depending on the relation between layers parameters. Electric polarization can be governed by applied magnetic field through magnetization processes occurring in a system; in its turn the electric field affects the distribution of magnetic moments.