TY - JOUR
T1 - Enhanced Tc and strong flux pinning in melt-processed NdBa2Cu3Oy superconductors
AU - Yoo, Sang Im
AU - Murakami, Masato
AU - Sakai, Naomichi
AU - Higuchi, Takamitsu
AU - Tanaka, Shoji
PY - 1994/7
Y1 - 1994/7
N2 - The effects of various oxygen partial pressures (PO2) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Ndl23) superconductors have been systematically investigated. Unlike in air or O2samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc’s of 95–96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.
AB - The effects of various oxygen partial pressures (PO2) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Ndl23) superconductors have been systematically investigated. Unlike in air or O2samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc’s of 95–96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.
KW - Anomalous peak effect
KW - Flux pinning
KW - Melt process
KW - NdBaCuO
KW - NdBaCuO solid solutions
KW - Oxygen partial pressure
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U2 - 10.1143/JJAP.33.L1000
DO - 10.1143/JJAP.33.L1000
M3 - Article
AN - SCOPUS:0028460917
VL - 33
SP - L1000-L1003
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 7
ER -