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Probing magnetic correlations with spin-echo modulated small angle neutron scattering (SEMSANS)

Journal Article (2021)
Author(s)

Fankang Li (Oak Ridge National Laboratory)

Nina J. Steinke (Institut Laue Langevin)

Robert M. Dalgliesh (ISIS Neutron and Muon Source)

Adam L. Washington (ISIS Neutron and Muon Source)

Jiazhou Shen (Indiana University)

Roger Pynn (Oak Ridge National Laboratory, Indiana University)

Steven R. Parnell (TU Delft - RID/TS/Instrumenten groep)

Research Group
RID/TS/Instrumenten groep
DOI related publication
https://doi.org/10.1016/j.nima.2021.165705
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Publication Year
2021
Language
English
Research Group
RID/TS/Instrumenten groep
Volume number
1014
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Abstract

The first measurements of magnetic correlation functions are presented using time-of-flight Spin-echo modulated small angle neutron scattering (SEMSANS) on the Larmor instrument at the ISIS pulsed neutron source. The accessible length scale is beyond that of the conventional SANS. A simplified model is presented to calculate the expected correlation functions for various magnetisation fields applied to the sample. As an example, we present the experimental data of a soft iron sample at various configurations of magnetisation field.