Magnetization reversal in Nd-Fe-B based nanocomposites as seen by magnetic small-angle neutron scattering | Zendy

Jens-Peter Bick | Zendy; Dirk Honecker | Zendy; Frank Döbrich | Zendy; K. Suzuki | Zendy; Elliot P. Gilbert | Zendy; Henrich Frielinghaus | Zendy; Joachim Kohlbrecher | Zendy; J. L. Gavilano | Zendy; E. M. Forgan | Zendy; Ralf Schweins | Zendy; Peter Lindner | Zendy; R. Birringer | Zendy; Andreas Michels | Zendy

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Magnetization reversal in Nd-Fe-B based nanocomposites as seen by magnetic small-angle neutron scattering

Author(s) -

Jens-Peter Bick,

Dirk Honecker,

Frank Döbrich,

K. Suzuki,

Elliot P. Gilbert,

Henrich Frielinghaus,

Joachim Kohlbrecher,

J. L. Gavilano,

E. M. Forgan,

Ralf Schweins,

Peter Lindner,

R. Birringer,

Andreas Michels

Publication year - 2013

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4776708

Subject(s) - condensed matter physics , small angle neutron scattering , materials science , neutron scattering , coercivity , magnetization , scattering , radius , small angle scattering , spin (aerodynamics) , neutron , magnetic field , physics , optics , nuclear physics , thermodynamics , computer security , quantum mechanics , computer science

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.

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