Neutron scattering studies of crystal structure and crystalline electric field in high-Tc ErBa2Cu3Ox disordered by fast neutron irradiation

A. Mirmelstein, A. Podlesnyak, V. Voronin, S. Lebedev, B. Goshchitskii, P. Allenspach, J. Mesot, U. Staub, M. Guillaume, P. Fischer, A. Furrer

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Abstract

The crystal structure and the crystalline-electric-field splitting of the Er3+ 4f-shell in the high-Tc superconductor ErBa2Cu3Ox (x = 6.95, 6.18) disordered with fast neutron irradiation has been investigated by elastic and inelastic neutron scattering techniques, respectively. The results yield evidence for the absence of a charge transfer between the planes and chains under disorder and point to the atomic displacements being the main radiation-induced defects in the CuO2 planes.

Original languageEnglish
Pages (from-to)337-343
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume200
Issue number3-4
DOIs
StatePublished - Oct 1 1992
Externally publishedYes

Funding

The authors would like to thank V. Kozhevnikov and S. Odoevskaya for providing the samples, V. Parkhomenko for the low-temperaturef ast neutron irradiation, as well as M. Sadovskii and V. Bobrov-skii for useful discussions. Financial support from both the Russian Scientific Council on HTSC problems and the Swiss National Science Foundation is gratefullya cknowledgedW. e are indebted to the Paul Scherrer Institute for providing infrastructure facilities.

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