![]() Malyeyev, Artem ![]() in Physical Review Materials (2021), 5 We report the results of an unpolarized small-angle neutron scattering (SANS) study on Mn-Bi-based rare-earth-free permanent magnets. The magnetic SANS cross section is dominated by long-wavelength ... [more ▼] We report the results of an unpolarized small-angle neutron scattering (SANS) study on Mn-Bi-based rare-earth-free permanent magnets. The magnetic SANS cross section is dominated by long-wavelength transversal magnetization fluctuations and has been analyzed in terms of the Guinier-Porod model and the distance distribution function. This provides the radius of gyration which, in the remanent state, ranges between about $220-240 \, \mathrm{nm}$ for the three different alloy compositions investigated. Moreover, computation of the distance distribution function in conjunction with results for the so-called $s$-parameter obtained from the Guinier-Porod model indicate that the magnetic scattering of a Mn$_{45}$Bi$_{55}$ sample has its origin in slightly shape-anisotropic structures. [less ▲] Detailed reference viewed: 83 (16 UL)![]() Bersweiler, Mathias ![]() ![]() ![]() in Journal of Physics: D Applied Physics (2020), 53 Detailed reference viewed: 138 (21 UL)![]() Bersweiler, Mathias ![]() ![]() ![]() in Physical Review. B (2019), 100 Detailed reference viewed: 185 (11 UL)![]() ; ; et al in Reviews of Modern Physics (2019), 91 Detailed reference viewed: 143 (9 UL) |
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