MAGNETIZATION REVERSAL OF ND-FE-B SINTERED MAGNETS AT LOW-TEMPERATURES

Authors
BARANOV NV SINITSYN EV IGNATYEV EA ANDREEV SV
Citation
Nv. Baranov et al., MAGNETIZATION REVERSAL OF ND-FE-B SINTERED MAGNETS AT LOW-TEMPERATURES, Journal of magnetism and magnetic materials, 130(1-3), 1994, pp. 133-137
Citations number
10
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
130
Issue
1-3
Year of publication
1994
Pages
133 - 137
Database
ISI
SICI code
0304-8853(1994)130:1-3<133:MRONSM>2.0.ZU;2-R
Abstract
Barkhausen-like magnetization jumps at temperatures T < 9.5 K and the behaviour of the coercive field at low temperatures are studied in sin tered Nd-Fe-B magnets with different chemical and phase compositions. The nonlinear temperature dependence of the coercive field H(c) is wel l described in the thermal activation model at T > 10 K. The low tempe rature anomalies of H(c) are discussed in terms of the quantum tunneli ng of the domain wall through the intergrain boundaries.