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Grain-size dependent demagnetizing factors in permanent magnets

Bance, S, et al. (2014), Grain-size dependent demagnetizing factors in permanent magnets, J. Appl. Phys., 116(23), 233903, doi:10.1063/1.4904854.

Abstract
The coercive field of permanent magnets decreases with increasing grain size. The
grain size dependence of coercivity is explained by a size dependent demagnetizing
factor. In Dy free Nd2Fe14B magnets the size dependent demagnetizing factor
ranges from 0.2 for a grain size of 55 nm to 1.22 for a grain size of 8300 nm. The
comparison of experimental data with micromagnetic simulations suggests that the
grain size dependence of the coercive field in hard magnets is due to the non-uniform
magnetostatic field in polyhedral grains.
Further information
BibTeX
@article{id2053,
  author = {S Bance and B Seebacher and T  Schrefl and L Exl and M Winklhofer and G Hrkac and G Zimanyi and T Shoji and M Yano and N Sakuma and M Ito and A Kato and A Manabe},
  journal = {J. Appl. Phys.},
  month = {dec},
  number = {23},
  pages = {233903},
  title = {{Grain-size dependent demagnetizing factors in permanent magnets}},
  volume = {116},
  year = {2014},
  url = {http://scitation.aip.org/content/aip/journal/jap/116/23/10.1063/1.4904854},
  doi = {10.1063/1.4904854},
}
EndNote
%0 Journal Article
%A Bance, S
%A Seebacher, B
%A Schrefl, T 
%A Exl, L
%A Winklhofer, M
%A Hrkac, G
%A Zimanyi, G
%A Shoji, T
%A Yano, M
%A Sakuma, N
%A Ito, M
%A Kato, A
%A Manabe, A
%D 2014
%N 23
%V 116
%J J. Appl. Phys.
%P 233903
%T Grain-size dependent demagnetizing factors in permanent magnets
%U http://scitation.aip.org/content/aip/journal/jap/116/23/10.1063/1.4904854
%8 dec
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Printed 12. Dec 2019 06:23