1988Journal of Applied PhysicsRequires access

Magnetic hysteresis in melt-spun Nd-Fe-Al-B-Si alloys with high remanence

G. C. Hadjipanayis, Wenjie Gong

Open publisher page 89 citations

Abstract

The large values of remanence observed in isotropic melt-spun R-Fe-Al-B-Si samples have been investigated by correlating the magnetic properties with the microstructure. Transmission electron microscope studies showed that the highest values of reduced remanence mR are obtained in samples with very fine Nd2Fe14B-type grains having a size of about 180 Å. The increased reduced remanence can be explained by the large interaction among the magnetic moments of neighboring grains which is caused by the large surface-to-volume ratio of the fine grains.

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What this paper is about

The large values of remanence observed in isotropic melt-spun R-Fe-Al-B-Si samples have been investigated by correlating the magnetic properties with the microstructure. Transmission electron microscope studies showed that the highest values of reduced remanence mR are obtained in samples with very fine Nd2Fe14B-type grains having a size of about 180 Å. The increased reduced remanence can be explained by the large interaction among the magnetic moments of neighboring grains which is caused by the large surface-to-volume ratio of the fine grains.

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Available abstract

The large values of remanence observed in isotropic melt-spun R-Fe-Al-B-Si samples have been investigated by correlating the magnetic properties with the microstructure. Transmission electron microscope studies showed that the highest values of reduced remanence mR are obtained in samples with very fine Nd2Fe14B-type grains having a size of about 180 Å. The increased reduced remanence can be explained by the large interaction among the magnetic moments of neighboring grains which is caused by the large surface-to-volume ratio of the fine grains.

Key concepts: Remanence, Materials science, Transmission electron microscopy, Microstructure, Hysteresis, Magnetic hysteresis, Magnetic moment, Isotropy

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