Enhanced superhyperfine interaction on Ru3+ in Tm3Al5O12 and on Ru3+ and Yb3+ in Tm3Ga5O12 |
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| Authors: | J A Hodges |
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| Institution: | 1. Centre d'Etudes Nucléaires de Saclay, DPh-G/PSRM, 91191, Gif Sur Yvette, France
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| Abstract: | Measurements of the enhanced superhyperfine interaction linking the electron spin of an impurity EPR ion and the nuclear moments of Van Vleck host lattice ions are reported for Ru3+ in Tm3Al5O12 and for Ru3+ and Yb3+ in Tm3Ga5O12. The Ru3+ results appear to be the first reported where this interaction is large enough to give rise to a well resolved superhyperfine structure. For Yb3+ the observed temperature dependent line narrowing evidences the role of Tm spin fluctuations. |
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