TY - JOUR
KW - Superconducting transition temperature
KW - Oxide superconductors
KW - Microscopic Examination–Transmission Electron Microscopy
KW - Metallography–Microstructures
KW - Superconducting Materials–Annealing
KW - Oxygen Annealing Effects
KW - Sintered Superconductor Alloys
KW - Twinned Orthorhombic Phase
KW - Vacuum Annealing Effects
KW - Gadolinium Barium Copper Alloys
AU - Ramamoorthy Ramesh
AU - G Thomas
AU - R.L Meng
AU - P.H Hor
AU - C.W Chu
AB - An electron microscopy study has been carried out to characterize the microstructure of a sintered Gd-Ba-Cu-O superconductor alloy. The GdBa2Cu3O7-x phase in the oxygen annealed sample is orthorhombic while in the vacuum annealed sample it is tetragonal. It is shown that the details of the fine structure in the [001] zone axis convergent beam patterns can be used to distinguish between the orthorhombic form and the tetragonal form. In addition to this matrix phase, an amorphous phase is frequently observed at the triple grain junctions. Gd-rich inclusions have been observed inside the matrix phase. © 1989, Materials Research Society. All rights reserved.
BT - Journal of Materials Research
DO - 10.1557/JMR.1989.0515
LA - eng
M1 - 3
N1 - cited By 1
N2 - An electron microscopy study has been carried out to characterize the microstructure of a sintered Gd-Ba-Cu-O superconductor alloy. The GdBa2Cu3O7-x phase in the oxygen annealed sample is orthorhombic while in the vacuum annealed sample it is tetragonal. It is shown that the details of the fine structure in the [001] zone axis convergent beam patterns can be used to distinguish between the orthorhombic form and the tetragonal form. In addition to this matrix phase, an amorphous phase is frequently observed at the triple grain junctions. Gd-rich inclusions have been observed inside the matrix phase. © 1989, Materials Research Society. All rights reserved.
PY - 1989
SP - 515
EP - 520
T2 - Journal of Materials Research
TI - Electron microscopy of a Gd-Ba-Cu-O superconductor
VL - 4
SN - 08842914
ER -