Magnetisation mechanisms and magnetic viscosity in NdFeB alloys

Conference · Fri Sep 01 00:00:00 EDT 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA)

OSTI ID:5215548

Ferguson, G B; O'Grady, K; Popplewell, J ^[1]; Chantrell, R W ^[2]

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1. School of Electronic Engineering Science, U.C.N.W., Dean St., Bangor, Gwynedd, Wales, U.K. LL571UT (GB)
2. School of Physics and Astronomy, Lancashire Polytechnic, Preston, Lancs, U.K. PR12TQ (GB)

Initial magnetisation, demagnetisation and magnetic viscosity data are presented for sintered and melt spun NdFeB over a range of temperatures. A strong domain wall pinning model is used to investigate the energy barriers in operation in each case. Temperature is observed to have little effect on magnetising the material whilst the demagnetising process is found to be dramatically effected. This seems to imply that very different mechanisms are at work in the magnetising and demagnetising processes.

• OSTI ID: 5215548
• Report Number(s): CONF-890309-; CODEN: IEMGA; TRN: 90-002057
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA), Vol. 25:5; Conference: INTERMAG: international magnetic conference, Washington, DC (USA), 28-31 Mar 1989; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
MAGNETIC PROPERTIES
IRON ALLOYS
NEODYMIUM ALLOYS
DEMAGNETIZATION
DISLOCATION PINNING
DOMAIN STRUCTURE
MAGNETIZATION
SINTERING
TEMPERATURE EFFECTS
ALLOYS
FABRICATION
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
360104* - Metals & Alloys- Physical Properties
360102 - Metals & Alloys- Structure & Phase Studies