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Synthesis and crystal structure of BaSrCuO2+x·CO3

✍ Scribed by C. Chaillout; Q. Huang; R.J. Cava; J. Chenavas; A. Santoro; P. Bordet; J.L. Hodeau; J.J. Krajewski; J.P. Levy; M. Marezio; W.F. Peck Jr.

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
583 KB
Volume
195
Category
Article
ISSN
0921-4534

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✦ Synopsis

A new oxycarbonate BaSrCuO2.22. CO3 has been synthesised by heat treating a mixture of Ba (OH)2" 8H20, SrCO3, and CuO at 820°C in 02 for 60-70 h. The structural analysis was based on powder X-ray and neutron diffraction data. The compound was found to be tetragonal, a = 5.5899 (2), c= 7.7153 (3)/k. The structure can be described in the P4/mbm space group with 2 formulae per unit cell. The structural refinement was carried out by the Rietveld method. The atoms are in the following positions: Ba (0

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