TY - JOUR
T1 - Preparation and crystal structure of Sr2CuO2(CO3)
AU - Miyazaki, Y.
AU - Yamane, H.
AU - Kajitani, T.
AU - Oku, T.
AU - Hiraga, K.
AU - Morii, Y.
AU - Fuchizaki, K.
AU - Funahashi, S.
AU - Hirai, T.
N1 - Funding Information:
The authors wish to thank Dr. Kunio Takada, IMR, Tohoku University, for his cooperation in chemical analysis and Mr. Katsutoshi Takagi, IMR, for his help with developing electron micrographs. We also thank Mr. Yasunari Kitagaki, IMR, for his assistance in the operation of HRPD. We are grateful to Prof. Tadashi Endo, Faculty of Engineering, To-hoku University, for his helpful advice in the calculation of the interatomic distances and angles. The research reported here was supported, in part, by a Grant-in-Aid for Developmental Scientific Research of the Ministry of Education, Science and Culture and was also partly supported by the High Field Lab- oratory for Superconducting Materials, IMR, To-hoku University.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1992/2/15
Y1 - 1992/2/15
N2 - Sr2CuO2(CO3) was prepared at 1273 K and 0.01 MPa CO2 partial pressure in a flowing gas of O2CO2 using a mixture of SrCO3 and CuO powders as a starting material. The compound has a tetragonal structure with lattice constants a = 7.8045(1), and c = 14.993(1) A ̊, and its space group is 14. The formula per unit cell is 8 Sr2CuO2(CO3), and measured and calculated densities are Dm = 4.71 g/cm3, and Dx = 4.81 g/cm3, respectively. The crystal structure was refined by Rietveld analysis on X-ray powder diffraction and neutron powder diffraction data. The final residuals (RF) were 4.31 and 4.27% for the X-ray and neutron data, respectively. The structure consists of deformed [CuO6] octahedrons and layers of ordered triangular CO3 groups. Sr atoms having eight near oxygen neighbors are between the [CuO6] octahedrons and the CO3 layers.
AB - Sr2CuO2(CO3) was prepared at 1273 K and 0.01 MPa CO2 partial pressure in a flowing gas of O2CO2 using a mixture of SrCO3 and CuO powders as a starting material. The compound has a tetragonal structure with lattice constants a = 7.8045(1), and c = 14.993(1) A ̊, and its space group is 14. The formula per unit cell is 8 Sr2CuO2(CO3), and measured and calculated densities are Dm = 4.71 g/cm3, and Dx = 4.81 g/cm3, respectively. The crystal structure was refined by Rietveld analysis on X-ray powder diffraction and neutron powder diffraction data. The final residuals (RF) were 4.31 and 4.27% for the X-ray and neutron data, respectively. The structure consists of deformed [CuO6] octahedrons and layers of ordered triangular CO3 groups. Sr atoms having eight near oxygen neighbors are between the [CuO6] octahedrons and the CO3 layers.
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U2 - 10.1016/0921-4534(92)90941-5
DO - 10.1016/0921-4534(92)90941-5
M3 - Article
AN - SCOPUS:0026819992
VL - 191
SP - 434
EP - 440
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3-4
ER -