TY - JOUR
T1 - High-T c oxide Y-Ba-Cu-O-normal and superconducting properties and phases
AU - Matsushita, A.
AU - Aoki, H.
AU - Asada, Y.
AU - Hatano, T.
AU - Kimura, K.
AU - Matsumoto, T.
AU - Nakamura, K.
AU - Ogawa, K.
PY - 1987
Y1 - 1987
N2 - We have studied the effects of magnetic and non-magnetic alloying elements on the superconductivity of the high-Tc compound YBa2Cu3Oy by replacing Cu with Fe and Al. Both alloying elements Fe and Al change the crystal symmetry from orthorhombic to tetragonal and the normal conductivity for metal-like to insulator-like with increasing alloy concentration. The suppression rate of Tc due to Fe is found to be comparable to that due to Al, i.e. ≈6 K/at%. The temperature gradient of the upper critical field, i.e. -(dHc2/dT) of alloyed samples YBa2(Cu0.98Fe0.02)3Oy and YBa2(Cu0.99Al0.01)3Oy are about one half of ≈3 T/K of YBa2Cu3Oy.
AB - We have studied the effects of magnetic and non-magnetic alloying elements on the superconductivity of the high-Tc compound YBa2Cu3Oy by replacing Cu with Fe and Al. Both alloying elements Fe and Al change the crystal symmetry from orthorhombic to tetragonal and the normal conductivity for metal-like to insulator-like with increasing alloy concentration. The suppression rate of Tc due to Fe is found to be comparable to that due to Al, i.e. ≈6 K/at%. The temperature gradient of the upper critical field, i.e. -(dHc2/dT) of alloyed samples YBa2(Cu0.98Fe0.02)3Oy and YBa2(Cu0.99Al0.01)3Oy are about one half of ≈3 T/K of YBa2Cu3Oy.
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U2 - 10.1016/0378-4363(87)90229-4
DO - 10.1016/0378-4363(87)90229-4
M3 - Article
AN - SCOPUS:0023545821
SN - 0378-4363
VL - 148
SP - 342
EP - 345
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
IS - 1-3
ER -