Single Crystal X-Ray Structure Analysis of Bi2(Sr, Ca)2CuOx and Bi2(Sr, Ca)3Cu2Ox Superconductors
- 1 September 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (9A) , L1661-1664
- https://doi.org/10.1143/jjap.27.l1661
Abstract
Average crystal structures of Bi2(Sr, Ca)2CuO x and Bi2(Sr, Ca)3Cu2O x were analyzed using single crystal X-ray intensity data applying anisotropic temperature factors. Crystal data: Bi2Sr1.60Ca0.40CuO6, Bbmb, a=5.3826(8) Å, b=5.3761(11), c=24.384(7), R w=0.108 for 282 reflections; Bi2.06Sr1.70Ca1.24Cu2O8, Bbmb, a=5.3946(8), b=5.3895(13), c=30.649(12), R w=0.064 for 354 reflections. Precession photographs show that Bi2Sr1.60Ca0.40CuO6 has a monoclinic modulated structure and Bi2.06Sr1.70Ca1.24Cu2O8 has an orthorombic one. The incommensurate modulated structures were qualitatively illustrated by using a modulation wave model.Keywords
This publication has 11 references indexed in Scilit:
- Single-Crystal X-Ray and Magnetization Study of the 106 K Bi-Sr-Ca-Cu-O SuperconductorJapanese Journal of Applied Physics, 1988
- Crystal Substructure of the Bi-Sr-Cu-O SystemJapanese Journal of Applied Physics, 1988
- Preparation and Properties of Single Crystals of the High-Tc Oxide Superconductor in the Bi-Sr-Ca-Cu-O SystemJapanese Journal of Applied Physics, 1988
- Structural Study on High-Tc Superconductor Bi2-x(Ca, Sr)3Cu2+xO9-yJapanese Journal of Applied Physics, 1988
- Possible Model of the Modulated Structure in High-Tc Superconductor in a Bi-Sr-Ca-Cu-O System Revealed by High-Resolution Electron MicroscopyJapanese Journal of Applied Physics, 1988
- A New High-Temperature Superconductor: Bi 2 Sr 3-x Ca x Cu 2 O 8+yScience, 1988
- A New High-Tc Oxide Superconductor without a Rare Earth ElementJapanese Journal of Applied Physics, 1988
- X-Ray Single Crystal Structure Analysis of Tetragonal Ba2YCu3-xO7-y, a High Temperature Form of the SuperconductorJapanese Journal of Applied Physics, 1987
- Empirical parameters for calculating cation–oxygen bond valencesActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1976
- X-ray scattering factors computed from numerical Hartree–Fock wave functionsActa Crystallographica Section A, 1968