A New Anomaly of Temperature Dependence of Mossbauer Parameters in the EuBa sub 2 (Cu sub 0.98 exp 119 Sn sub 0.01 exp 57 Fe sub 0.01 ) sub 3 O sub 7-- delta Superconductor

The total area of the exp 57 Fe Mossbauer spectra of the EuBa sub 2 (Cu sub 0.98 exp 119 Sn sub 0.01 exp 57 Fe sub 0.01 ) sub 3 O sub 7-- delta superconductor exhibited a highly usual anomalous temperature dependence, i.e. it increased monotonously with increasing temperature between 120-300K. Anoma...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 1990-12, Vol.146 (6), p.385-389
Main Authors: Kuzmann, E, Nagy, S, Csikos, E, Vertes, A, Halasz, I
Format: Article
Language:English
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Summary:The total area of the exp 57 Fe Mossbauer spectra of the EuBa sub 2 (Cu sub 0.98 exp 119 Sn sub 0.01 exp 57 Fe sub 0.01 ) sub 3 O sub 7-- delta superconductor exhibited a highly usual anomalous temperature dependence, i.e. it increased monotonously with increasing temperature between 120-300K. Anomalous changes in the exp 57 Fe Mossbauer parameters were also found around T sub C . These latter changes could be associated with phonon softening and low temperature phase transformation. Spectra. 4 ref.--AA
ISSN:0236-5731