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Origin of the anomalous temperature dependence of coercivity in soft ferromagnets

Moubah, R.; Ahlberg, M.; Zamani, A.; Olsson, A.; Shi, S.; Sun, Z.; Carlson, Stefan LU ; Hallen, A.; Hjorvarsson, B. and Jonsson, P. E. (2014) In Applied Physics Reviews 116(5).
Abstract
We report on the origin of the anomalous temperature dependence of coercivity observed in some soft ferromagnets by studying the magnetic and electronic properties of FeZr films doped using ion implantation by H, He, B, C, and N. The anomalous increase of the coercivity with temperature was observed only in the C- and B-doped samples. Using x-ray photoelectron spectroscopy, we show that the anomalous behavior of the coercivity coincides with the occurrence of an electron charge transfer for those implanted samples. The origin of the anomaly is discussed in terms of (i) magnetic softness, (ii) nature of the Fe-C and -B covalent bonds, and (iii) large charge transfer. (C) 2014 AIP Publishing LLC.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Reviews
volume
116
issue
5
publisher
American Institute of Physics
external identifiers
  • wos:000341178900042
  • scopus:84905978804
ISSN
0021-8979
DOI
10.1063/1.4892038
language
English
LU publication?
yes
id
ed793f17-83f3-4431-8d8d-6ad3769e1868 (old id 4716950)
date added to LUP
2014-11-06 12:59:44
date last changed
2017-01-01 03:35:01
@article{ed793f17-83f3-4431-8d8d-6ad3769e1868,
  abstract     = {We report on the origin of the anomalous temperature dependence of coercivity observed in some soft ferromagnets by studying the magnetic and electronic properties of FeZr films doped using ion implantation by H, He, B, C, and N. The anomalous increase of the coercivity with temperature was observed only in the C- and B-doped samples. Using x-ray photoelectron spectroscopy, we show that the anomalous behavior of the coercivity coincides with the occurrence of an electron charge transfer for those implanted samples. The origin of the anomaly is discussed in terms of (i) magnetic softness, (ii) nature of the Fe-C and -B covalent bonds, and (iii) large charge transfer. (C) 2014 AIP Publishing LLC.},
  articleno    = {053906},
  author       = {Moubah, R. and Ahlberg, M. and Zamani, A. and Olsson, A. and Shi, S. and Sun, Z. and Carlson, Stefan and Hallen, A. and Hjorvarsson, B. and Jonsson, P. E.},
  issn         = {0021-8979},
  language     = {eng},
  number       = {5},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Reviews},
  title        = {Origin of the anomalous temperature dependence of coercivity in soft ferromagnets},
  url          = {http://dx.doi.org/10.1063/1.4892038},
  volume       = {116},
  year         = {2014},
}