Synthesis and characterization of Bi2(Sr,Ca)3Cu2O8+δ with different Sr/Ca ratio

Autor:	Rika Sekine, Yasuhiro Murakoshi, Shousuke Teratani, Maki Kawai
Rok vydání:	1995
Předmět:	Bond length Crystallography Chemistry Electrical resistivity and conductivity Transition temperature Energy Engineering and Power Technology chemistry.chemical_element sense organs Electrical and Electronic Engineering Condensed Matter Physics Oxygen Electronic Optical and Magnetic Materials
Zdroj:	Physica C: Superconductivity. 246:385-390
ISSN:	0921-4534
DOI:	10.1016/0921-4534(95)00154-9
Popis:	Single-phase Bi 2.2 (Sr 0.9− y Ca y ) 2 Ca 1.0 Cu 2.0 O 8.1+ z ( y = 0 to 0.4) was synthesized and changes in the environment around apical oxygen (O ap ) induced by substitution of the Sr sites by Ca were examined. By decreasing the z value, the T c value increases from 71.5 K to 91.5 K for the sample with y = 0, but remains unchanged for the sample with y = 0.4. The different behavior of changes in T c by the y values are discussed from the point of view of the changes in the CuO ap bond length.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28b15ab5315f5def514a968936f79345 https://doi.org/10.1016/0921-4534(95)00154-9 Zobrazit plný text záznamu Full Text from ScienceDirect