Abstract
We report β-particle and γ-ray angular distribution measurements from60Co oriented in CoAu at low temperatures in applied fields up to 72 kOe and Co concentrations of 0.95 to 11 at.%. The results are explained by assuming a random molecular field interaction between groups of Co impurities. The hyperfine field on Co nuclei in groups of three or more nearest neighbors is negative and has a value near −180 kOe. The induced field on Co-pair nuclei is small and probably also negative. Complete polarization of the Co moments in the more concentrated alloys requires a very large applied field.
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References
A. Blandin and J. Friedel, J. Phys. Radium 20 (1959) 160.
P. Costa-Ribeiro, J. Souletie and D. Thoulouze, Phys. Rev. Letters 24 (1970) 900.
E. Boucai, B. Lecoanet, J. Pilon, J.L. Tholence and R. Tournier, Phys. Rev. B 3 (1971) 3834.
J. LeGuillerm, R. Tournier and L. Weil, Proc. 8th Int. Conf. on low temp. phys., p. 236.
R.J. Holliday and W. Weyhmann, Phys. Rev. Letters 25 (1970 243.
J. Boysen, W.D. Brewer and J. Flouquet, Solid State Comm. 12 (1973) 1095.
A. Narath and D.C. Barham, Phys. Rev. B7 (1973) 2195.
P. Costa-Ribeiro, J. Souletie, D. Thoulouze and R. Tournier, J. de Phys. (Suppl.) 32C1 (1971) 753.
P. Costa-Ribeiro, These, Grenoble (1973, unpublished).
J.P. Compton, D. Phil Thesis, Oxford (1965, unpublished).
J.C. Gallop, D. Phil Thesis, Oxford (1970, unpublished).
R.J. Borg, Phys. Rev. B1 (1970) 349.
J. Crangle and W.R. Scott, Phys. Rev. Letters 12 (1964) 126.
A.P. Murani, J. of Phys. F4 (1974) 757.
R.J. Borg and T.A. Kitchens, J. Phys. Chem. Solids 34 (1973) 1323.
M.W. Klein and L. Shen, Phys. Rev. B5 (1972) 1174.
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This work was supported in part by the Bundesministerium für Bildung und Wissenschaft. A preliminary report was contributed to the International Conference on Hyperfine Interactions, Uppsala, 1974.
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Boysen, J., Brewer, W.D. & Klein, E. Nuclear orientation of60Co in concentrated CoAu alloys. Hyperfine Interact 1, 55–64 (1975). https://doi.org/10.1007/BF01022442
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DOI: https://doi.org/10.1007/BF01022442