Reversible magnetization behavior and exchange coupling in two-phase NdFeBmelt spun ribbons

Authors
Chiriac, H Marinescu, M Tiberto, P Vinai, E
Citation
H. Chiriac et al., Reversible magnetization behavior and exchange coupling in two-phase NdFeBmelt spun ribbons, MAT SCI E A, 304, 2001, pp. 957-960
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
304
Year of publication
2001
Pages
957 - 960
Database
ISI
SICI code
0921-5093(20010531)304:<957:RMBAEC>2.0.ZU;2-K
Abstract
The present paper presents some aspects related to the magnetic features of some two-phase alpha Fe/Nd2F14B melt spun ribbons: Nd4Fe86CuNb3B6 and Nd8F e77Co5CuNb3B6 with the volume ratio of alpha Fe soft magnetic phase to Nd2F e14B hard magnetic phase of 28 and 71% respectively, for the two investigat ed compositions. With decreasing the volume ratio of the hard magnetic comp onent, the reversible magnetization behavior is accentuated (recoil relativ e permeability mu (rel rec) increases) and remanence becomes more sensitive to microstructure. Exchange magnetic interactions are preponderant in Nd8F e77Co5CuNb3B6 samples while in Nd4Fe86CuNb3B6, the dipolar type of interact ions predominates at the investigated annealing conditions. (C) 2001 Elsevi er Science B.V. All rights reserved.