Abstract
400 keV111In+ ions were implanted into CuO powder. After annealing at 570 K, more than 50% of the implants were found on substitutional sites in the monoclinic CuO lattice. PAC-spectra taken below the Néel temperatureT N≈230 K revealed a broadening of the quadrupole spectrum and additional satellite frequencies caused by combined electric and magnetic hyperfine interaction. Assuming that the orientation of the electric field gradient is given by the point charge model and taking the 〈010〉 direction of the supertransferred fieldB tr in CuO from neutron diffraction, we find a Larmor frequency of ωL≈40 MHz corresponding toB tr≈2.7 T at 60 K.
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Supported in part by BMFT under contract FK213N54930.
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Bartos, A., Uhrmacher, M., Lieb, K.P. et al. PAC study on111Cd in antiferromagnetic CuO. Hyperfine Interact 50, 617–623 (1989). https://doi.org/10.1007/BF02407700
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DOI: https://doi.org/10.1007/BF02407700