Cooperative configuration change in EuPd2Si2

Croft, M. ; Hodges, J. A. ; Kemly, E. ; Krishnan, A. ; Murgai, V. ; Gupta, L. C. (1982) Cooperative configuration change in EuPd2Si2 Physical Review Letters, 48 (12). pp. 826-829. ISSN 0031-9007

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4f7⇄4f6+e charge fluctuations (inferered from 151Eu Mossbauer spectroscopy) in EuPd2Si2 show a strong nonlinear thermal dependence when compared to those observed in dilute Eu in LaPd2Si2. This nonlinear behavior is well described by extending the interconfigurational fluctuation model to include a cooperative intersite coupling of the interconfigurational fluctuation excitation energy to the 4f occupation number. Eu nuclear vibrational damping occurs in the region of greatest charge instability.

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Source:Copyright of this article belongs to American Physical Society.
ID Code:11282
Deposited On:09 Nov 2010 03:39
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