Local Magnetic Anisotropic Effects in Fe-B-Si Metallic Glasses

概要

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Magnetic hysteresis studies were carried out on Fe_<78>B_<13>Si_9 (2605S-2) and Fe_<79>B_<16>Si_5 (2605S-3) for both as-cast samples and those after annealing for 2 hours at different temperature, viz., 373 K, 473 K, 573 K and 673 K. The coercivity was found to increase with annealing temperature almost similarly for both samples in the beginning. Maximum coercivity was obtained for the samples annealed at 473 K. Then the coercivity was found to decrease when annealed at 573 K and 673 K. The value for the sample annealed at 673 K was found to be even less than the as-cast value. Saturation magnetization of all the samples was determined using small samples in a high magnetic field. The observed changes in these parameters at different annealing temperature as compared with as-cast values are discussed on the basis of different effects taking place during the amorphous-to-crystalline transformation and consequent fluctuating exchange interactions and local magnetic anisotropy.
社団法人応用物理学会の論文
1990-11-20