TY - JOUR
T1 - Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors
AU - Chikumoto, N.
AU - Ozawa, S.
AU - Yoo, S. I.
AU - Hayashi, N.
AU - Murakami, M.
PY - 1997/5/1
Y1 - 1997/5/1
N2 - The effects of oxygen content on the superconducting transition temperatures, Tc, and magnetic properties of melt-textured LRE123 (LRE = Nd, Sm) superconductors were studied. The oxygen content could be varied by changing the annealing temperature, Ta, in that the oxygen deficiency, δ, monotonically decreased with decreasing the Ta from 600°C to 300°C. A further decrease of Ta to 275°C showed no appreciable change. In both systems the highest Tc was obtained for the samples annealed at 300°C. Magnetic properties were also strongly dependent on the oxygen content, showing that the control of oxygen content is critical for achieving good pinning properties.
AB - The effects of oxygen content on the superconducting transition temperatures, Tc, and magnetic properties of melt-textured LRE123 (LRE = Nd, Sm) superconductors were studied. The oxygen content could be varied by changing the annealing temperature, Ta, in that the oxygen deficiency, δ, monotonically decreased with decreasing the Ta from 600°C to 300°C. A further decrease of Ta to 275°C showed no appreciable change. In both systems the highest Tc was obtained for the samples annealed at 300°C. Magnetic properties were also strongly dependent on the oxygen content, showing that the control of oxygen content is critical for achieving good pinning properties.
KW - Critical current density
KW - Irreversibility field
KW - LRE123
KW - Melt-processing
KW - Oxygen deficiency
KW - Peak effect
UR - http://www.scopus.com/inward/record.url?scp=0031142432&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031142432&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(97)00115-9
DO - 10.1016/S0921-4534(97)00115-9
M3 - Article
AN - SCOPUS:0031142432
VL - 278
SP - 187
EP - 191
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3-4
ER -