PREPARATION AND CRYSTAL-STRUCTURE OF SR2CUO2(CO3)

被引：115

作者：

MIYAZAKI, Y ^{[1
]}

YAMANE, H ^{[1
]}

KAJITANI, T ^{[1
]}

OKU, T ^{[1
]}

HIRAGA, K ^{[1
]}

MORII, Y ^{[1
]}

FUCHIZAKI, K ^{[1
]}

FUNAHASHI, S ^{[1
]}

HIRAI, T ^{[1
]}

机构：

[1] JAPAN ATOM ENERGY RES INST,DEPT PHYS,TOKAI,IBARAKI 31911,JAPAN

来源：

PHYSICA C | 1992年 / 191卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90941-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Sr2CuO2(CO3) were prepared at 1273 K and 0.01 MPa CO2 partial pressure in a flowing gas of O2-CO2 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) angstrom, and its space group is I4. The formula per unit cell is 8 Sr2CuO2(CO3), and measured and calculated densities are D(m) = 4.71 g/cm3, and D(x) = 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 (R(F)) 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.

引用

页码：434 / 440

页数：7

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