Influence of pressure on the inhomogeneous mixed-valent state in Eu3S4 |
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| Authors: | J Röhler G Kaindl |
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| Institution: | Abteilung für Physik u. Astronomie, Ruhr Universität Bochum D-4630 Bochum, Germany |
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| Abstract: | The 21.7-keV nuclear gamma resonance of 151Eu was used for studying the inhomogeneous mixed-valent compound Eu3S4 in the presence range 0 to 15 kbar. At room temperature the activation energy for electron hopping between the crystallographically equivalent divalent and trivalent Eu sites was found to decrease with pressure by dEa/dP = -1.8 ± 0.3 meV/kbar. No change of the mean valence of Eu with pressure was observed. |
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