DOI: 10.1063/1.115170. Nanostructured Nd–Fe–B magnets with enhanced remanence

Nanostructured Nd–Fe–B magnets with enhanced remanence

10.1063/1.115170

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Nanostructured isotropic Nd–Fe–B magnets with enhanced remanence were produced by hot compaction of mechanically alloyed Nd–Fe–B powders at temperatures of about 600 °C. Phase formation occurred during hot pressing without significant grain growth. The microstructure is a two phase nanocomposite of hard magnetic Nd2Fe14B and soft magnetic α-Fe with an average grain size of about 20 nm. These small dimensions allow effective exchange interactions between hard and soft magnetic grains and result in an enhancement of the remanence by more than 30% above the Stoner–Wolfarth limit expected for noninteracting single domain particles. So far, the best results are a remanence of 1.0 T, an energy density of 121 kJ/m3, and a coercivity of 4.2 kA/cm for a Nd–Fe–Co–Si–B magnet.

Bibliography

Wecker, J., Schnitzke, K., Cerva, H., & Grogger, W. (1995). Nanostructured NdâFeâB magnets with enhanced remanence. Applied Physics Letters, 67(4), 563â565.

Authors 4

J. Wecker (first)
K. Schnitzke (additional)
H. Cerva (additional)
W. Grogger (additional)

References 16 Referenced 53

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{'key': '2024020309180677800_r2'}
{'key': '2024020309180677800_r3', 'first-page': '157', 'article-title': 'Z. Metallkd.', 'volume': '81', 'year': '1990'} / Z. Metallkd. (1990)
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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:40 a.m.)
Deposited	1 year, 7 months ago (Feb. 3, 2024, 4:18 a.m.)
Indexed	1 year, 6 months ago (Feb. 10, 2024, 6:07 a.m.)
Issued	30 years, 1 month ago (July 24, 1995)
Published	30 years, 1 month ago (July 24, 1995)
Published Print	30 years, 1 month ago (July 24, 1995)

Funders 0

None

BibTeX

@article{Wecker_1995, title={Nanostructured Nd–Fe–B magnets with enhanced remanence}, volume={67}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.115170}, DOI={10.1063/1.115170}, number={4}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Wecker, J. and Schnitzke, K. and Cerva, H. and Grogger, W.}, year={1995}, month=jul, pages={563–565} }

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