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We analyze dispersion relations of magnons in ferromagnetic nanostructures with uniaxial anisotropy taking into account inertial terms, i.e. magnetic nutation. Inertial effects are parametrized by damping-independent parameter $\beta$,…

Mesoscale and Nanoscale Physics · Physics 2021-08-25 Alexey M. Lomonosov , Vasily V. Temnov , Jean-Eric Wegrowe

Results of Small-Angle Scattering study of diamonds with various types of point and extended defects and different degrees of annealing are presented. It is shown that thermal annealing and/or mechanical deformation cause formation of…

Materials Science · Physics 2012-09-11 A A Shiryaev , P Boesecke

Inelastic neutron scattering provides a powerful probe of the magnetic excitations of quantum magnets. Altermagnets have recently emerged as a new class of magnets with vanishing net magnetization characteristic of antiferromagnets and with…

Strongly Correlated Electrons · Physics 2023-09-29 Thomas A. Maier , Satoshi Okamoto

The response of vortex state to the magnetic field in Nb3Sn is probed using muon spin rotation and small-angle neutron scattering. A transformation of vortex structure between hexagonal and squared lattice is observed over a relatively low…

Polarization-analyzed small-angle neutron scattering (PASANS) is an advanced technique that enables the selective investigation of magnetic scattering phenomena in magnetic materials and distinguishes coherent scattering obscured by…

We report the results of an unpolarized small-angle neutron scattering (SANS) study on Mn-Zn ferrite (MZFO) magnetic nanoparticles with the aim to elucidate the interplay between their particle size and the magnetization configuration. We…

In this paper we report results for magnetic observables of finite spin clusters composed of S=1/2 ions. We consider clusters of two, three and four spins in distinct spatial arrangements, with isotropic Heisenberg interactions of various…

Strongly Correlated Electrons · Physics 2009-11-10 J. T. Haraldsen , T. Barnes , J. L. Musfeldt

Spin waves in non-collinear magnets with $C_{nv}$ symmetry are discussed in the context of inelastic neutron scattering in small-angle scattering geometry. In the framework of a minimal model including exchange coupling,…

Strongly Correlated Electrons · Physics 2023-09-22 Oleg I. Utesov

The conclusions arising from the multiple small angle neutron scattering theory, developed recently by S.V. Maleyev, R.V. Pomortsev and Y.N. Skryabin [Phys. Rev. B 50 7133 (1994)] for the value of Born parameter more than 1, are…

Materials Science · Physics 2009-10-30 A. Z. Menshikov , S. G. Bogdanov , Y. N. Skryabin

Small-angle neutron scattering (SANS) is a powerful technique for probing the nanoscale structure of materials. However, the fundamental limitations of neutron flux pose significant challenges for rapid, high-fidelity data acquisition…

Making material experiments more efficient is a high priority for materials scientists who seek to discover new materials with desirable properties. In this paper, we investigate how to optimize the laborious sequential measurements of…

Materials Science · Physics 2019-10-24 Takuya Kanazawa , Akinori Asahara , Hidekazu Morita

We present a symmetry-resolved classification of two-dimensional spin-flip small-angle neutron scattering (SANS) patterns arising from dilute ensembles of spherical nanoparticles hosting magnetic vortex states. Based on a linear vortex…

Mesoscale and Nanoscale Physics · Physics 2026-04-01 Michael P. Adams , Elizabeth M. Jefremovas , Andreas Michels

A new methodology for micromagnetic simulations of magnetic nanocomposites is presented. The methodology is especially suitable for simulations of two-phase composites consisting of magnetically hard inclusions in a soft magnetic matrix…

Mesoscale and Nanoscale Physics · Physics 2011-09-20 Sergey Erokhin , Dmitry Berkov , Nataliya Gorn , Andreas Michels

We present a microscopic theory for multiple light scattering occurring in inhomogeneous 3D media subject to an external magnetic field. Magneto-optical effects (the Faraday effect and the Cotton-Mouton effect) occur inside the small…

Condensed Matter · Physics 2007-05-23 Bart A. van Tiggelen , Roger Maynard , Theo M. Nieuwenhuizen

Magnetic nanoparticles offer a unique potential for various biomedical applications, but prior to commercial usage a standardized characterization of their structural and magnetic properties is required. For a thorough characterization, the…

Mesoscale and Nanoscale Physics · Physics 2020-08-18 Mathias Bersweiler , Helena Gavilan Rubio , Dirk Honecker , Andreas Michels , Philipp Bender

In the metallic magnet Nb$_{1-y}$Fe$_{2+y}$, the low temperature threshold of ferromagnetism can be investigated by varying the Fe excess $y$ within a narrow homogeneity range. We use elastic neutron scattering to track the evolution of…

Partial wave theory of a three dmensional scattering problem for an arbitray short range potential and a nonlocal Aharonov-Bohm magnetic flux is established. The scattering process of a ``hard shere'' like potential and the magnetic flux is…

Quantum Physics · Physics 2009-11-10 De-Hone Lin

We study the distribution of local magnetic susceptibilities in the two-dimensional antiferromagnetic S=1/2 Heisenberg model on various random clusters, in order to determine whether effects of edge disorder could be detected in NMR…

Strongly Correlated Electrons · Physics 2010-10-13 Wanzhou Zhang , Wenan Guo , Kaj H Hoglund , Ling Wang , Anders W. Sandvik

The influence of the magnetic moment interaction of nucleons on nucleon-deuteron elastic scattering and breakup cross sections and on elastic scattering polarization observables has been studied. Among the numerous elastic scattering…

Nuclear Theory · Physics 2009-11-10 H. Witala , J. Golak , R. Skibinski , C. R. Howell , W. Tornow

We experimentally study how the magnetic correlations develop in a binary alloy close to the ferromagnetic quantum critical point with small-angle neutron scattering (SANS). Upon alloying the itinerant ferromagnet nickel with vanadium, the…

Strongly Correlated Electrons · Physics 2023-02-27 Shiva Bhattarai , Hind Adawi , Jean-Guy Lussier , Adane Gebretsadik , Maxim Dzero , Kathryn L. Krycka , Almut Schroeder