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
PY - 1998/1/1
Y1 - 1998/1/1
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 -