Infrared temperature dependent studies of Bi2Sr2CaCu2O8 glass ceramic superconductors
β Scribed by A. Memon; M.N. Khan; S. Al-Dallal; D.B. Tanner
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 291 KB
- Volume
- 235-240
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
Pressed ceramic pellets of the high-temperature superconductor Bi,Sr,CaCu,Os (T, = 85 K) were investigated by reflectance spectroscopy in the infrared and visible regions at several temperatures both below and above the superconducting transition. In the process of identifying and analyzing vibratio
The anisotropy of the ab-plane optical conductivity and de resistivity of single-domain BizSrzCaCuzOs crystals has been measured between 20 and 300 K. There is a modest normal-state anisotropy, optical anisotropy below T~, and an unexpected anisotropy in the resistive transition.
Susceptibility, resistivity and X-ray diffraction measurements have been performed on single crystals of BiESr2CaCu208+ 8. Very sharp (0.5 K width) superconducting transition temperatures as low as 55 K have been reached in the overdoped part of the phase diagram. Anneals in low oxygen pressures hav