TY - JOUR
T1 - Effects of oxygen on the superconducting properties of Nd1+xBa2-xCu3O7-δ (0 ≤ x ≤ 0.4) solid solution
AU - Chikumoto, Noriko
AU - Ozawa, Shinobu
AU - Murakami, Masato
N1 - Funding Information:
We would like to thank G. Osabe, H. Kojo for providing samples, T. Sasagawa, J. Shimoyama for helping with the iodmetric titration, and Nissan Arc. for chemical analyses. This work was supported by NEDO for the R&D of the Industrial Science and Technology Frontier Program.
PY - 1998
Y1 - 1998
N2 - We have studied the relationship between the oxygen content and superconducting properties for a series of Nd1+xBa2-xCu3O7-δ (0 ≤ x ≤ 0.4) solid solution. The temperature variation of oxygen content was studied as a function of x by means of both TG-DTA and chemical compositional analyses. The amount of oxygen absorbed during oxygen annealing was found to decrease with an increasing Nd content. In the sample with x = 0, the superconductivity transition temperature Tc increased monotonically with a decrease in the annealing temperature Ta, while Tc for the samples with larger x values showed non-monotonic Ta dependence. The Ta value required to achieve the highest Tc was higher than that for the largest x. On the other hand, the pinning properties improved with a decrease in Ta.
AB - We have studied the relationship between the oxygen content and superconducting properties for a series of Nd1+xBa2-xCu3O7-δ (0 ≤ x ≤ 0.4) solid solution. The temperature variation of oxygen content was studied as a function of x by means of both TG-DTA and chemical compositional analyses. The amount of oxygen absorbed during oxygen annealing was found to decrease with an increasing Nd content. In the sample with x = 0, the superconductivity transition temperature Tc increased monotonically with a decrease in the annealing temperature Ta, while Tc for the samples with larger x values showed non-monotonic Ta dependence. The Ta value required to achieve the highest Tc was higher than that for the largest x. On the other hand, the pinning properties improved with a decrease in Ta.
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U2 - 10.1016/S0964-1807(98)00097-0
DO - 10.1016/S0964-1807(98)00097-0
M3 - Article
AN - SCOPUS:0031988684
VL - 6
SP - 163
EP - 168
JO - Applied Superconductivity
JF - Applied Superconductivity
SN - 0964-1807
IS - 2-5
ER -