Pressure effects on the electrical resistivities of (Y1−xPrx)2Ba4Cu7O15-δ with x = 0, 0.1, 0.4 and 0.6
| Autor: | M. Otsuka, T. Yamanishi, Akiyuki Matsushita, Shigeru Horii, Izumi Hirabayashi, Yasuharu Kodama, Yuh Yamada, Takehiko Matsumoto, S. Takashima, N Yamanada, K. Kawamoto |
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| Rok vydání: | 1994 |
| Předmět: |
Materials science
Electrical resistivity and conductivity Transition temperature Doping Analytical chemistry Energy Engineering and Power Technology Superconducting transition temperature Electrical and Electronic Engineering Normal state Pressure dependence Condensed Matter Physics Pressure coefficient Electronic Optical and Magnetic Materials |
| Zdroj: | Physica C: Superconductivity. 227:254-258 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/0921-4534(94)90079-5 |
| Popis: | We have investigated the pressure effects on the electrical resistivities of (Y 1− x Pr x ) 2 Ba 4 Cu 7 O 15-δ ( x = 0, 0.1 , 0.4 and 0.6) polycrystals. The superconducting transition temperature T c decreases from 78.8 K ( x = 0) to 40 K ( x = 0.6) with increasing Pr concentration. The pressure coefficient of T c at P = 0, (d T c /d P ) P = 0 is remarkably affected by the Pr concentration. It varies from + 5 K/GPa ( x = 0) to -15 K/GPa ( x = 0.6). The pressure dependence of the electrical resistivity in the normal state is also studied. We discuss the effect of Pr doping on the pressure dependence of T c . |
| Databáze: | OpenAIRE |
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