Effect of magnetic field and temperature on the voltage-current characteristics of YBCO superconductor |
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Authors: | H. Böcük B. A. Albiss İ Ercan H. Özkan N. Gasanly |
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Affiliation: | (1) Department of Physics, Middle East Technical University, 06531 Ankara, Turkey;(2) Ankara Nuclear Research and Training Center, 06105 Saray-Ankara, Turkey |
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Abstract: | Voltage-current characteristics of YBCO superconductor was studied under magnetic field up to 0.4 T at different temperatures below Tc. The critical temperature decreases and the transition width broadens under magnetic field. V-I data below Tc were fitted to a power law expression V I(T,B) in which (T,B) is found to decrease with increase of magnetic field and temperature, gradually approaching unity as T approaches Tc, being independent of magnetic field. Similarly, (T,B) approaches unity as magnetic field increases being independent of temperature. |
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