Crystal structures of CCa2CuO5 and CSr1.9Ca1.1Cu2O7 refined from single crystal data

Crystal structures of CCa2CuO5 and CSr1.9Ca1.1Cu2O7 refined from single crystal data

Single crystals were grown for new layered oxycarbonates CCa2CuO5 and CSr1.9Ca1.1Cu2O7 at 6 GPa using a belt-type apparatus. Their crystal structures were determined using single crystal XRD data with R1(wR2)=0.0294(0.0659) and 0.0199(0.0457) for CCa2CuO5 and CSr1.9Ca1.1Cu2O7, resp. These phases cry...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2003-01, Vol.384 (1-2), p.163-168
Hauptverfasser: Kopnin, E.M, Matveev, A.T, Salamakha, P.S, Sato, A, Takayama-Muromachi, E
Format: Artikel
Sprache:eng
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Zusammenfassung:Single crystals were grown for new layered oxycarbonates CCa2CuO5 and CSr1.9Ca1.1Cu2O7 at 6 GPa using a belt-type apparatus. Their crystal structures were determined using single crystal XRD data with R1(wR2)=0.0294(0.0659) and 0.0199(0.0457) for CCa2CuO5 and CSr1.9Ca1.1Cu2O7, resp. These phases crystallize in the space group P4/mmm (No. 123), Z=1 with a=3.8157(1), c=7.1426(3) angstroms for CCa2CuO5 and a=3.8753(1) c=10.6765(5) angstroms for CSr1.9Ca1.1Cu2O7. In contrast to CSr2CuO5, no ordering in the orientation of the triangular CO3 groups was revealed in CCa2CuO5 and CSr1.9Ca1.1Cu2O7. 16 refs.
ISSN:0921-4534
DOI:10.1016/S0921-4534(02)01862-2