TY - JOUR
T1 - Synthesis, characterization and melt processing of Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz superconductors
AU - Moussa, M. A.A.
AU - Muralidhar, M.
AU - Izumi, M.
AU - Murakami, M.
PY - 2009/10/15
Y1 - 2009/10/15
N2 - Effects of a combined substitute of Yb and Nd on Y site on the superconducting properties of YBa2Cu3Oy have been studied. We synthesized Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz compound with x = 0.2, 0.4, 0.6, 0.8 and 1.0. Here, the ratio of Yb-Nd was fixed to be 9:1 for obtaining 123 phase without secondary phases. The melt processing thermal profiles for Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz with x = 0.2 and 0.4 and the addition of 40 mol% {Y1-x(Yb0.9Nd0.1) x}2BaCuO5 and 0.5 wt% Pt in air were determined onthe basis of the thermal analysis results. All samples showed a low grain growth rate, particularly for high x values, which may be partially ascribed to un-optimized thermal schedules. Although almost all the samples exhibited low Jc values, the sample with x = 0.2 exhibited Tc of 88.8 K and a relatively high Jc value of 16,000 A/cm 2 at 77 K for H//c-axis.
AB - Effects of a combined substitute of Yb and Nd on Y site on the superconducting properties of YBa2Cu3Oy have been studied. We synthesized Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz compound with x = 0.2, 0.4, 0.6, 0.8 and 1.0. Here, the ratio of Yb-Nd was fixed to be 9:1 for obtaining 123 phase without secondary phases. The melt processing thermal profiles for Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz with x = 0.2 and 0.4 and the addition of 40 mol% {Y1-x(Yb0.9Nd0.1) x}2BaCuO5 and 0.5 wt% Pt in air were determined onthe basis of the thermal analysis results. All samples showed a low grain growth rate, particularly for high x values, which may be partially ascribed to un-optimized thermal schedules. Although almost all the samples exhibited low Jc values, the sample with x = 0.2 exhibited Tc of 88.8 K and a relatively high Jc value of 16,000 A/cm 2 at 77 K for H//c-axis.
KW - Bulk superconductor
KW - Characterization
KW - Melt process
KW - Y(YbNd) BaCuO
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U2 - 10.1016/j.physc.2009.05.019
DO - 10.1016/j.physc.2009.05.019
M3 - Article
AN - SCOPUS:68249156801
VL - 469
SP - 1211
EP - 1214
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 15-20
ER -