Published 1998 | Version v1
Miscellaneous Metadata-only

The effect of magnetic field treatment on enhanced exchange coupling of Nd2Fe14B/Fe3B magnet

Creators

  • 1. Pohang Inst. of Sci. and Technol. (Korea, Republic of). Electron. Mater. Res.

Description

An externally applied magnetic field during heat treating the Nd2Fe14B/Fe3B based spring magnet was found to enhance the exchange coupling between the hard and soft magnetic grains. More than 30% increase in Mr/Ms values for melt-spun Nd4Fe73.5Co3(Hf1-xGax)B18.5 (x=0. 0.5, 1) alloys was resulted from an uniform distribution of Fe3B, α -Fe and Nd2Fe14B phases, and also from a reduced grain size of those phases by 20%. The externally applied magnetic field induced the uniform distribution of fine grains. The present study also showed that there is an optimum grain size exhibiting a high coercivity (22 nm for the Nd4Fe73.5Co3Hf1-xGaxB18.5 alloys) which has been discussed in terms of previously simulated exchange coupling parameters. (orig.)

Part of:
Rare-earth magnets and their applications. Vol. 1. Proceedings

Additional details

Publishing Information

ISBN
3-88355-264-X
Imprint Title
Rare-earth magnets and their applications. Vol. 1. Proceedings
Imprint Pagination
604 p.
Journal Page Range
p. 243-251

Conference

Title
15. international workshop on rare-earth magnets and their applications (REM-15); 10. international symposium on magnetic anisotropy and coercivity in rare-earth transition metal alloys, and exhibition
Dates
30 Aug - 4 Sep 1998
Place
Dresden (Germany)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
31018652
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
BORON ALLOYS; COERCIVE FORCE; EXCHANGE INTERACTIONS; FERROMAGNETIC MATERIALS; GRAIN SIZE; HYSTERESIS; IRON ALLOYS; MELTING; NEODYMIUM ALLOYS; PERMANENT MAGNETS; SOLIDIFICATION; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
ALLOYS; ELECTRON MICROSCOPY; EQUIPMENT; INTERACTIONS; MAGNETIC MATERIALS; MAGNETS; MATERIALS; MICROSCOPY; MICROSTRUCTURE; PHASE TRANSFORMATIONS; RARE EARTH ALLOYS; SIZE; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
12 refs.