Temperature dependence of hyperfine fields in intermediate valent140CeLa and140CeLu |
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Authors: | T. A. Thiel M. Böttcher E. Gerdau |
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Affiliation: | 1. II. Institut für Experimentalphysik, Universit?t Hamburg, D-2000, Hamburg 50, FRG
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Abstract: | The hyperfine fields for the systems140CeLa and140CeLu have been determined by time differential perturbed angular correlations (TDPAC) in the temperature range 4.2 K≤T≤330 K. Magnitude and temperature dependence of the paramagnetic enhancement factor β indicate that cerium in either system is of intermediate valence. This behaviour is discussed in terms of a theory proposed by Ramakrishnan et al. [1–3]. |
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