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Evolution with applied field of the magnetic structure of TbNiAl4

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Abstract

Neutron powder diffraction data of TbNiAl4 has been re-examined using a representational analysis, allowing a new model of the magnetic structure to be deduced. The basis vectors obtained describe an ‘elliptical helix’ type structure in which the moments rotate in the ab-plane as one moves along the c-axis. This new model has been used to simulate the expected result of a Low Temperature Nuclear Orientation (LTNO) experiment involving 299 keV gamma-ray emission from the 160Dy daughter of aligned 160Tb nuclei. Results of the simulation along the a-axis appear to partly match currently existing experimental data, with good agreement in the magnitude of lost anisotropy.

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Correspondence to R. White.

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Proceedings of the 5th Joint International Conference on Hyperfine Interactions and International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2014) Canberra, Australia, 21–26 September 2014

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White, R., Hutchison, W.D., Goossens, D.J. et al. Evolution with applied field of the magnetic structure of TbNiAl4 . Hyperfine Interact 231, 85–93 (2015). https://doi.org/10.1007/s10751-014-1103-y

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  • DOI: https://doi.org/10.1007/s10751-014-1103-y

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