Open AccessInfluence of grain alignment degree on the magnetic properties for single-phase nanocrystalline Pr2Fe14B magnets
Author(s) -
Song He,
Hongwei Zhang,
Chuanbing Rong,
Renjie Chen,
Jirong Sun,
Baogen Shen
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.3408
Subject(s) - nanocrystalline material , magnet , coercivity , materials science , remanence , grain size , micromagnetics , condensed matter physics , hysteresis , phase (matter) , magnetic hysteresis , degree (music) , coupling (piping) , magnetic field , magnetization , composite material , nanotechnology , physics , quantum mechanics , acoustics
The single-phase nanocrystalline Pr2Fe14B magnets composed of cubic-shaped and irregular-shaped grains is built. The magnetic hysteresis loops are simulated by micromagnetism finite element method. The remanence, coercivity and maximum energy product decrease with deteriorated grain alignment. Attributed to strong intergrain exchange coupling (IGEC), the variation of magnetic proper ties with alignment degree is significantly affected by the average grain size i n nanocrystalline magnets. The investigation shows the increase of coercivity wi th improved grain alignment in nanocrystalline magnets, which is completely diff erent from the phenomena in sintered magnets.