国际晶体学联合会
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作者:Andreas Michels , Jens Peter Bick
来源:[J].J Appl Crystallogr(IF 3.343), 2013, Vol.46 (Pt 3), pp.788-790IUCr
摘要:Real-space magnetic small-angle neutron scattering data from nanocrystalline cobalt and nickel have been analysed in terms of a recently developed micromagnetic theory for the autocorrelation function of the spin misalignment [Michels (2010). Phys. Rev. B, 82, 024433]. The approa...
作者:Andreas Michels , Artem Malyeyev ...
来源:[J].IUCrJ, 2020, Vol.7 (Pt 1), pp.136-142IUCr
摘要:Small-angle scattering of X-rays and neutrons is a routine method for the determination of nanoparticle sizes. The so-called Guinier law represents the low-q approximation for the small-angle scattering curve from an assembly of particles. The Guinier law has originally been deri...
作者:... Charles Dewhurst , Rainer Birringer , Andreas Michels
来源:[J].J Appl Crystallogr, 2016, Vol.49 (Pt 2), pp.533-538IUCr
摘要:The results are reported of magnetic field-dependent neutron diffraction experiments on polycrystalline inert-gas condensed holmium with a nanometre crystallite size (D = 33 nm). At T = 50 K, no evidence is found for the existence of helifan(3/2) or helifan(2) struc...
作者:Denis Mettus , Andreas Michels
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 5), pp.1437-1450IUCr
摘要:On the basis of the continuum theory of micromagnetics, the correlation function of the spin-misalignment small-angle neutron scattering cross section of bulk ferromagnets (e.g. elemental polycrystalline ferromagnets, soft and hard magnetic nanocomposites, nanoporous ferromagnets...

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