Reference : Magnetization reversal in Nd-Fe-B based nanocomposites as seen by magnetic small-angl...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/521
Magnetization reversal in Nd-Fe-B based nanocomposites as seen by magnetic small-angle neutron scattering
English
Bick, Jens-Peter mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Honecker, Dirk mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Döbrich, Frank [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Suzuki, Kiyonori [Monash University, Australia]
Gilbert, Elliot P. [Bragg Institute, ANSTO, Australia]
Frielinghaus, Henrich [Jülich Centre for Neutron Science, Germany]
Joachim, Kohlbrecher [Paul Scherrer Institut, Switzerland]
Gavilano, Jorge [Paul Scherrer Institut, Switzerland]
Forgan, Edward M. [University of Birmingham, United Kingdom]
Schweins, Ralf [Institut Laue-Langevin, France]
Lindner, Peter [Institut Laue-Langevin, France]
Birringer, Rainer [Universität des Saarlandes, Germany]
Michels, Andreas mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
2013
Applied Physics Letters
American Institute of Physics
102
2
0224151-0224155
Yes (verified by ORBilu)
0003-6951
Melville
NY
[en] boron alloys ; coercive force ; crystal microstructure ; iron alloys ; magnetic particles ; magnetic structure ; magnetisation reversal ; nanocomposites ; nanomagnetics ; nanoparticles ; neodymium alloys ; neutron diffraction
[en] We have studied the magnetization-reversal process of a Nd2Fe14B/Fe3B nanocomposite using small-angle neutron scattering. Based on the computation of the autocorrelation function of the spin misalignment, we have estimated the characteristic size lC of spin inhomogeneities around the Nd2Fe14B nanoparticles. The quantity lC approaches a constant value of about 12.5 nm ( ∼ average Nd2Fe14B particle radius) at 14 T and takes on a maximum value of about 18.5 nm at the coercive field of −0.55 T. The field dependence of lC can be described by a model that takes into account the convolution relationship between the nuclear and the magnetic microstructure.
http://hdl.handle.net/10993/521
10.1063/1.4776708

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