Synthesis structure and superconductivity in all-perovskite-layered titanium cuprates

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/0022-4596(95)80036-O· OSTI ID:486273

Palacin, M R; Fuertes, A; Casan-Pastor, N ^[1]

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1. CSIC, Barcelona (Spain); and others

A study on the reaction pathways, the synthesis, and the range of stability of complex perovskites in the system Ln-(Sr/Ba)-Cu-Ti is reported. Several possibilities for the Cu: Ti stoichiometry were explored with the aim of isolating potentially superconducting layered phases. A bulk superconducting phase of the formula YSr{sub 2}Cu{sub 2.7}Ti{sub 0.3}O{sub 8-{delta}} with a T{sub c} of 26 K was isolated and a whole family of layered oxides of the formula Ln{sub 2}Ba{sub 2}Cu{sub 2}Ti{sub 2}O{sub 11-{delta}} with a T{sub c} of 26 K was isolated and a whole family of layered oxides of the formula Ln{sub 2}Ba{sub 2}Cu{sub 2}Ti{sub 2}O{sub 11-{delta}} was characterized. The authors have determined the limits of this family which extends form Ln = La to Tb. The studies reported include X-ray and electron diffraction, and TGA and magnetic susceptibility measurements. Structural and magnetic correlations for these oxides are analyzed.

• OSTI ID: 486273
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 119; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
CUPRATES
ELECTRON DIFFRACTION
HIGH-TC SUPERCONDUCTORS
MAGNETIC SUSCEPTIBILITY
RARE EARTH COMPOUNDS
STOICHIOMETRY
STRONTIUM COMPOUNDS
SUPERCONDUCTIVITY
THERMAL GRAVIMETRIC ANALYSIS
TITANIUM COMPOUNDS
X-RAY DIFFRACTION