Coercivity generation of surface Nd{sub 2}Fe{sub 14}B grains and mechanism of fcc-phase formation at the Nd/Nd{sub 2}Fe{sub 14}B interface in Nd-sputtered Nd-Fe-B sintered magnets

The coercivity of surface grains of a Nd-Fe-B sintered magnet can be measured unequivocally if the magnet is a thin slab with the orientation of its c-axis parallel to the largest surface. Due to the loss of part of the neodymium-rich grain boundary phase, the surface Nd{sub 2}Fe{sub 14}B grains hav...

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Bibliographic Details
Published in:Journal of applied physics 2008-07, Vol.104 (1)
Main Authors: Fukagawa, Tomoki, Hirosawa, Satoshi
Format: Article
Language:English
Subjects:
ANNEALING
BORON ALLOYS
COERCIVE FORCE
DEPOSITION
FCC LATTICES
GRAIN BOUNDARIES
IRON ALLOYS
LATTICE PARAMETERS
LAYERS
MAGNETISM
MAGNETS
MATERIALS SCIENCE
NEODYMIUM ALLOYS
NEODYMIUM OXIDES
SPUTTERING
STOICHIOMETRY
SURFACE ENERGY
TEMPERATURE RANGE 0400-1000 K
TRANSMISSION ELECTRON MICROSCOPY
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