TY - JOUR
T1 - Oxygen-vacancy ordering and microstructure in annealed YBa2Cu3O7-δ superconductors
AU - Werder, D. J.
AU - Chen, C. H.
AU - Cava, R. J.
AU - Batlogg, B.
PY - 1988/1/1
Y1 - 1988/1/1
N2 - We present the results of a systematic electron diffraction study of short-range oxygen-vacancy ordering in ceramic YBa2Cu3O7-δ superconductors with 0.08≤δ≤0.67, prepared by a Zr-getter technique. In addition to the two types of orderings with reduced wave vectors ((1/2,0,0) and ((2/5,0,0), a new vacancy ordering with reduced wave vector((1/3,0,0) has been found. We have observed in samples with δ=0.5 a vacancy ordering with a large correlation length (∼150 A) in the c-axis direction. We have also observed a tweedlike microstructure at δ=0.61, which is caused by a high density of microtwins.
AB - We present the results of a systematic electron diffraction study of short-range oxygen-vacancy ordering in ceramic YBa2Cu3O7-δ superconductors with 0.08≤δ≤0.67, prepared by a Zr-getter technique. In addition to the two types of orderings with reduced wave vectors ((1/2,0,0) and ((2/5,0,0), a new vacancy ordering with reduced wave vector((1/3,0,0) has been found. We have observed in samples with δ=0.5 a vacancy ordering with a large correlation length (∼150 A) in the c-axis direction. We have also observed a tweedlike microstructure at δ=0.61, which is caused by a high density of microtwins.
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U2 - 10.1103/PhysRevB.38.5130
DO - 10.1103/PhysRevB.38.5130
M3 - Article
AN - SCOPUS:33744653253
SN - 0163-1829
VL - 38
SP - 5130
EP - 5133
JO - Physical Review B
JF - Physical Review B
IS - 7
ER -