Abstract
Measurements of the dielectric susceptibility of a series of lanthanum ethyl sulfate/cerium ethyl sulfate crystals (5–100 at % Ce) have been made over the temperature range 0.05–20 K. The results confirm the Jahn-Teller distortion in pure cerium ethyl sulfate, demonstrate a distortion for up to 25% La in the mixed crystals, and confirm the inversion of the zero-temperature crystal field splitting at about 40% La. The dipole moment of the cerium ion was found to be (5.2±0.4)×10−31 and (6.7±0.5)×10−31 C m for the applied electric field perpendicular and parallel to thec axis, respectively.
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Supported by the Natural Sciences and Engineering Research Council and the Queen's University Advisory Research Council.
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Stubbs, R.J., Harrison, J.P. Electric susceptibility of mixed cerium/lanthanum ethyl sulfate crystals. J Low Temp Phys 51, 679–690 (1983). https://doi.org/10.1007/BF00683234
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DOI: https://doi.org/10.1007/BF00683234