Abstract
A169Tm Mössbauer effect spectrum at 60 mK of the TmBa2Cu3O7−δ superconductor is a symmetric doublet characteristic of pure quadrupolar interaction. There is thus no evidence of Tm magnetic ordering in this material down to this temperature, in contrast to other rare-earth based “1-2-3” superconductors. The spectrum is fitted with crystal field parameters derived from those of the holmium-based superconductor, and values are found for shielding parameters.
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Dedicted to S.S. Hanna on the occasion of his 70th birthday
Supported by USA NSF Grant No. DMR-8807394 and DOE Grant No. DE-FG07-80ER10275.
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Fritz, L.S., Dixon, N.S. Low temperature169Tm Mössbauer spectrum of the TmBa2Cu3O7−δ superconductor. Hyperfine Interact 72, 191–194 (1992). https://doi.org/10.1007/BF02398864
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DOI: https://doi.org/10.1007/BF02398864