دورية
Preparation, characterization, and far-infrared study of ceramic high-Tc superconductors
| العنوان: | Preparation, characterization, and far-infrared study of ceramic high-Tc superconductors |
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| المؤلفون: | Zetterer, T., Ose, W., Schützmann, J., Otto, H. H., Obermayer, P. E., Tasler, N., Lengfellner, H., Lugert, G., Keller, J., Renk, K. F. |
| المصدر: | Journal of the Optical Society of America B: Optical Physics; March 1989, Vol. 6 Issue: 3 p420-435, 16p |
| مستخلص: | We report on a study of single-phase (superconducting) YBa_2Cu_3O_7 and (nonconducting) Y_2BaCuO_5 and mixed phases of these compounds in bulk and film samples and on an investigation of ceramic bulk material of the homologous series Tl_2Ba_2CanCun_+1O_2n_+6. We describe preparation and structural characterization by x-ray diffraction analyses and further characterization by electric, magnetic, tunnel junction, and Raman scattering studies, and we present results of far-infrared reflectivity measurements. In a theoretical analysis we relate the phonon structure of reflectivity spectra to geometric structure of a metallic network, with holes filled with nonconducting material. The influence of superconductivity on reflectivity is also investigated. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 07403224 15208540 |
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