Investigations of the Hyperfine Interactions in Copper-Oxide Perovskites Using(151)Eu and (57)Fe Moessbauer Spectroscopy

摘要

In 1986, superconductivity was discovered in a perovskite-type material at anunprecedentedly high temperature. As no satisfactory theory describing high-Tc superconductivity has been developed and since not all the perovskite phases exhibiting superconducting properties have been explored, the field is still the focus of active research. This work strives to promote the basic understanding of the high-Tc superconducting materials. It is suggested that the results obtained here are part of those boundary conditions that any successful theory of high-Tc superconductivity must take into account. This overview begins with a survey of the various phases studied in the work, followed by the theory behind the methods used to characterize the materials. Finally the experimental conditions and the results are presented.