Impact of the neutron-depolarization effect on polarized neutron scattering in ferromagnets

Polarized Neutron Scattering

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Magnetic small-angle neutron scattering of bulk ferromagnets.

We summarize recent theoretical and experimental work in the field of magnetic small-angle neutron scattering (SANS) of bulk ferromagnets. The response of the magnetization to spatially inhomogeneous magnetic anisotropy and magnetostatic stray fields is computed using linearized micromagnetic theory, and the ensuing spin-misalignment SANS is deduced. Analysis of experimental magnetic-field-depe...

Polarized neutron scattering study on antiferromagnetic states in CeRh0.6Co0.4In5

Polarized neutron scattering experiments were performed on mixed compound CeRh0.6Co0.4In5 to clarify the nature of the lowtemperature ordered states. Three nonequivalent Bragg peaks, characterized by the wave vectors of qh ∼ (1/2, 1/2, 0.3), q1 ∼ (1/2, 1/2, 0.4) and qc = (1/2, 1/2, 1/2), were observed at 1.4 K. These Bragg peaks are found to occur entirely in spin-flip channel. This indicates t...

Neutron Depolarization in Superconductors

The dependences of neutron depolarization on applied magnetic field are deduced along trie magnetization hysteresis loop in terms of the Beau mortel of the critical state. The depolarization in uniaxial superconductors with the reversible magnetization, mcluding uniaxial magnetic superconductors,is also considered. A strong depolarization is expected ifthe neutrons travel along the vortex fines.