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The determination of magnetic structures using low temperature nuclear orientation:166mHo-Ho

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Abstract

It is demonstrated that the low temperature nuclear orientation technique can be used to determine the axes of quantization in a multiaxial ordered ensemble of nuclear spins. Expressions for the anisotropic γ-ray intensity from particular geometries are derived for the case in which each subsystem has its own axial symmetry. The determination of the atomic magnetic structure in antiferromagnets is discussed and the results of recent experiments on helically ordered166mHo-Ho are presented. In these experiments, the angular variation of the intensities of some of the more intense γ-rays were measured and compared to theory. A value of 80.4(1)°, not including systematic errors, was obtained for the semi-cone angle of the helix formed by the atomic magnets.

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Authors and Affiliations

  1. Department of Physics, University of British Columbia, V6T 1W5, Vancouver, B.C., Canada

    B. G. Turrell

  2. National Bureau of Standards, 20234, Washington, D.C., USA

    H. Marshak

Authors
  1. B. G. Turrell
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  2. H. Marshak
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Turrell, B.G., Marshak, H. The determination of magnetic structures using low temperature nuclear orientation:166mHo-Ho . Hyperfine Interact 11, 205–222 (1981). https://doi.org/10.1007/BF01026479

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  • DOI: https://doi.org/10.1007/BF01026479

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