TY - JOUR
AU - Ramamoorthy Ramesh
AU - S Jin
AU - S Nakahara
AU - T.H Tiefel
AB - Phase decomposition of a bulk Y2Ba4Cu 8O16 superconductor has been studied. The microstructure of the sample is heavily faulted and contains many stacking defects, including a new "125" structure. It is likely that these fine-scale (10-30 Å thick) stacking defects are responsible for the significantly improved flux pinning in the phase-decomposed sample. It is proposed that the decomposition process begins with the reaction "248" 0><fv/0 "123"+"125", which could possibly occur by a spontaneous, short-range diffusion reaction. Further decomposition involves gradual removal of the extra CuO chains by long-range diffusion to produce a mixture of "123"+CuO.
BT - Applied Physics Letters
DO - 10.1063/1.104126
LA - eng
M1 - 14
N1 - cited By 46
N2 - Phase decomposition of a bulk Y2Ba4Cu 8O16 superconductor has been studied. The microstructure of the sample is heavily faulted and contains many stacking defects, including a new "125" structure. It is likely that these fine-scale (10-30 Å thick) stacking defects are responsible for the significantly improved flux pinning in the phase-decomposed sample. It is proposed that the decomposition process begins with the reaction "248" 0><fv/0 "123"+"125", which could possibly occur by a spontaneous, short-range diffusion reaction. Further decomposition involves gradual removal of the extra CuO chains by long-range diffusion to produce a mixture of "123"+CuO.
PY - 1990
SP - 1458
EP - 1460
T2 - Applied Physics Letters
TI - Phase decomposition and structural defects in a Y-Ba-Cu-O superconductor
VL - 57
SN - 00036951
ER -