Room temperature X-ray crystal structure analysis of a twinned crystal of high-Tc superconducting YBa2Cu3O7−x(0 ≤ x ≤ 0.10)
Abstract
An X-ray crystal structure analysis of a twinned crystal of the high-Tc superconductor YBa2Cu3O7−x (0 ≤ x ≤ 0.10) was performed. The investigated sample crystallizes orthorhombically in the space group Pmmm with a = 3.843(1), b = 3.881(1) and c = 11.673(2) Å. The observed intensities are explained by two models, which are differentiated by the occupancy of two oxygen positions: (a) a pseudomerohedric twin model (twin plane (110)) with oxygen in the site 1e, an occupancy factor SOF = 0.94(6) and a volume ratio of twins of 1:0.45(5), yielding the composition YBa2Cu3O6.84(8); and (b) statistically distributed oxygen atoms in the sites 1b and 1e and the overall composition YBa2Cu3O7.03(16). In the latter case the differences to tetragonal symmetry are only manifested in the nonequivalent Uij of the two oxygen atoms. Due to the splitting of intensities and considering neutron diffraction results, we conclude to deal with a twin.
Articles in the same Issue
- The crystal and molecular structure of aceto-acetanilide hydrazone pigment N-phenyl-2-(4-chloro-phenylhydrazono)-3-oxo-butyramide
- The crystal and molecular structure of azo disperse dye 3-(4-diethylamino-phenyl-azo)phthalimide
- Crystal structure and bonding of tris(3-methylpyridinium)(3-ethylpyridinium) β-octamolybdate
- Structure cristalline d'un chloro-silico-chromate de plomb, Pb5(CrO4,SiO4)3Cl
- The single chain arsenites Pb(AsO2)Cl and Pb2(AsO2)3Cl. Preparation and structure investigation
- Crystal state conformation of a β,β′-disubstituted dehydroaminoacid derivative
- Room temperature X-ray crystal structure analysis of a twinned crystal of high-Tc superconducting YBa2Cu3O7−x(0 ≤ x ≤ 0.10)
- Crystal structure and optical properties of potassium pentafluorohafnate monohydrate, KHfF5 · H2O
- The structures of crystalline hydrogen bromide
- NaxMoP2O7, a mixed valence molybdenum diphosphate with a tunnel structure
- The oxygen packings of low-quartz and ReO3 under high pressure
- Indigo: Crystal structure refinement based on synchrotron data
- The crystal structure of silver(I) 2-hydroxybenzoate and silver(I) 2,6-dihydroxybenzoate
- Crystal structure of the cyanospinel Tl2Zn(CN)4 and structure relationship in the cyanospinel group
- Crystal structure and hydrogen bonding of 2,5-dihydroxy-3,6-dimethyl-p-benzoquinone
- Crystal structure of iodanilic acid
- Can X-ray crystal structure analysis decide between twinning by pseudo-merohedry and statistical distribution in YBa2Cu3O7?
Articles in the same Issue
- The crystal and molecular structure of aceto-acetanilide hydrazone pigment N-phenyl-2-(4-chloro-phenylhydrazono)-3-oxo-butyramide
- The crystal and molecular structure of azo disperse dye 3-(4-diethylamino-phenyl-azo)phthalimide
- Crystal structure and bonding of tris(3-methylpyridinium)(3-ethylpyridinium) β-octamolybdate
- Structure cristalline d'un chloro-silico-chromate de plomb, Pb5(CrO4,SiO4)3Cl
- The single chain arsenites Pb(AsO2)Cl and Pb2(AsO2)3Cl. Preparation and structure investigation
- Crystal state conformation of a β,β′-disubstituted dehydroaminoacid derivative
- Room temperature X-ray crystal structure analysis of a twinned crystal of high-Tc superconducting YBa2Cu3O7−x(0 ≤ x ≤ 0.10)
- Crystal structure and optical properties of potassium pentafluorohafnate monohydrate, KHfF5 · H2O
- The structures of crystalline hydrogen bromide
- NaxMoP2O7, a mixed valence molybdenum diphosphate with a tunnel structure
- The oxygen packings of low-quartz and ReO3 under high pressure
- Indigo: Crystal structure refinement based on synchrotron data
- The crystal structure of silver(I) 2-hydroxybenzoate and silver(I) 2,6-dihydroxybenzoate
- Crystal structure of the cyanospinel Tl2Zn(CN)4 and structure relationship in the cyanospinel group
- Crystal structure and hydrogen bonding of 2,5-dihydroxy-3,6-dimethyl-p-benzoquinone
- Crystal structure of iodanilic acid
- Can X-ray crystal structure analysis decide between twinning by pseudo-merohedry and statistical distribution in YBa2Cu3O7?
