DOI: 10.1063/1.358026. Two- and three-dimensional calculation of remanence enhancement of rare-earth based composite magnets (invited)

Two- and three-dimensional calculation of remanence enhancement of rare-earth based composite magnets (invited)

10.1063/1.358026

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Micromagnetic calculations using a finite element technique rigorously describe the magnetic properties of novel, isotropic rare-earth-based composite magnets. Numerical results obtained for a composite material of Nd2Fe14B, SmCo5 or Sm2(Fe0.8Co0.2)17N2.8 and α-Fe particles show that remanence, coercivity, and coercive squareness sensitively depend on microstructural features. Interparticle exchange interactions enhance the remanence by about 60% with respect to noninteracting particles for a mean-grain size approaching the exchange length of the soft magnetic phase and a significant percentage of α-Fe. On the other hand, exchange interactions between the phases suppress the nucleation of reversed domains and thus preserve a high coercive field. Therefore, optimally structured, isotropic composite magnets show remarkably high energy products exceeding 400 kJ/m3.

Bibliography

Schrefl, T., Fischer, R., Fidler, J., & KronmÃ¼ller, H. (1994). Two- and three-dimensional calculation of remanence enhancement of rare-earth based composite magnets (invited). Journal of Applied Physics, 76(10), 7053â7058.

Authors 4

T. Schrefl (first)
R. Fischer (additional)
J. Fidler (additional)
H. Kronmüller (additional)

References 30 Referenced 192

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:47 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 9:42 a.m.)
Indexed	2 weeks, 2 days ago (Aug. 12, 2025, 6:22 p.m.)
Issued	30 years, 9 months ago (Nov. 15, 1994)
Published	30 years, 9 months ago (Nov. 15, 1994)
Published Print	30 years, 9 months ago (Nov. 15, 1994)

Funders 0

None

BibTeX

@article{Schrefl_1994, title={Two- and three-dimensional calculation of remanence enhancement of rare-earth based composite magnets (invited)}, volume={76}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.358026}, DOI={10.1063/1.358026}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Schrefl, T. and Fischer, R. and Fidler, J. and Kronmüller, H.}, year={1994}, month=nov, pages={7053–7058} }

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