Hall coefficient R H and superconducting transition temperature T: in Y09Cao~Ba2Cu3Oy with 6,59<y\_<7.01 have been measured under ambient pressure and under high pressure up to 2GPa. It is found that the relation of Tc and Hall number l/eR H under high pressure is explained in terms of the change in
Electrical transport and superconductivity in the (Y0.8Ca0.2)Ba2Cu3Oy system with variable oxygen content
β Scribed by Gang Xiao; N.S. Rebello
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 446 KB
- Volume
- 211
- Category
- Article
- ISSN
- 0921-4534
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Three ceramic superconductors Y0.sCa0.2Ba2Cu3\_xCxO r (x = 0, 0.13 and 0.34) were prepared both in the oxidized and partially reduced forms. The boundaries of the superconducting regions were estimated to y = 6.40, 6.50 and 6.75 for the three systems, respectively. The role of incorporated CO 3 grou
Y 0.8 Ca 0.2 Ba 2 Cu 3 O y samples with large range of oxygen content, have been systematically studied by means of positron annihilation technology, transport property measurements and X-ray diffraction. The positron lifetime parameters have a strong dependence on oxygen content y, and show evident
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