Composition dependence of superconducting properties in Bi2(Sr1−xCax)n+1CunOy (n=2, 3) thin films
- 26 September 1988
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (13), 1213-1215
- https://doi.org/10.1063/1.100668
Abstract
Thin films of the Bi2(Sr1−xCax)n+1CunOy (n=2, 3) system were prepared on (100)MgO substrates by coevaporation of Bi2O3, Sr‐Ca alloy, and Cu metal. The lattice constant of the c axis of the low Tc (∼85 K) phase (n=2) decreased with increasing Ca composition x. The superconducting transition temperatures of both the low Tc phase and high Tc (∼110 K) phase (n=3) decreased with increasing x. These tendencies indicated that both the low Tc phase and the high Tc phase have a mutual solubility between Ca and Sr atoms in this Bi system and that the Tc ’s of these two phases are related to the c‐axis lattice constant.Keywords
This publication has 12 references indexed in Scilit:
- Preparation of 107 K Superconducting Thin Film in Bi-Sr-Ca-Cu-O System by CoevaporationJapanese Journal of Applied Physics, 1988
- Crystal substructure and physical properties of the superconducting phasePhysical Review B, 1988
- Preparation of Thin Films by Coevaporation and Phase Identification in Bi-Sr-Ca-Cu-O SystemJapanese Journal of Applied Physics, 1988
- High-Tc superconducting phases in the series Bi2.1(Ca, Sr)n+lCunO2n+4+δNature, 1988
- Electron microscopy on the Tc = 110 K (midpoint) phase in the system Bi2O3–SrO–CaO–CuONature, 1988
- On the 110 K Superconductor in the Bi-Ca-Sr-Cu-O SystemJapanese Journal of Applied Physics, 1988
- Superconductivity in the high-Bi-Ca-Sr-Cu-O system: Phase identificationPhysical Review Letters, 1988
- Identification of the Superconducting Phase in the Bi-Ca-Sr-Cu-O SystemJapanese 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