MAGNETIC-PROPERTIES AND MICROSTRUCTURE OF V-AND-M-ADDED, FE3B-BASED, ND-FE-B NANOCRYSTALLINE PERMANENT-MAGNETS (M=AL, SI)

Authors
KANEKIYO H UEHARA M HIROSAWA S
Citation
H. Kanekiyo et al., MAGNETIC-PROPERTIES AND MICROSTRUCTURE OF V-AND-M-ADDED, FE3B-BASED, ND-FE-B NANOCRYSTALLINE PERMANENT-MAGNETS (M=AL, SI), Materials science & engineering. A, Structural materials: properties, microstructure and processing, 182, 1994, pp. 868-870
Citations number
4
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
182
Year of publication
1994
Pages
868 - 870
Database
ISI
SICI code
0921-5093(1994)182:<868:MAMOVF>2.0.ZU;2-Y
Abstract
Simultaneous addition of V and M (M = Al or Si) improves the squarenes s of the hysteresis loops and the remanence of Fe3B-based, Nd-Fe-B har d magnetic material. The V-and-M-added permanent magnet ribbons have H (cl) = 360-410 kA m-1 and B(r) = 1.0-1.2 T. The microstructure of the V-and V-and-M-added ribbons was investigated by transmission electron microscopy. The average grain size of the V-added material is 40 nm in diameter, whereas in the improved material with the V and M additions the mean grain size is 20 nm. Within the framework of existing theori es, the reduced grain size due to M addition contributes to the improv ed magnetic properties.