Simple double-layer cuprates: 60K superconductivity in a lanthanum barium strontium copper oxide [La[sub 1. 6]Ba[sub 0. 4]SrCu[sub 2]O[sub 6]]

Journal Article · Tue Mar 01 04:00:00 EST 1994 · Materials Research Bulletin; (United States)

DOI:https://doi.org/10.1016/0025-5408(94)90027-2· OSTI ID:7284040

Mahesh, R; Vijayaraghavan, R; Rao, C N.R. ^[1]

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1. Indian Institute of Science, Bangalore (India). Solid State and Structural Chemistry Unit

Double layer cuprates of the formulae LaSrLnCu[sub 2]O[sub 6] (Ln=Y or rare earth) and La[sub 2[minus]x]Ba[sub x]ACu[sub 2]O[sub 6] (A=Ca, Sr) have been prepared by the traditional ceramic method and also by heating CuO, KClO[sub 3] and a carbonate mixture obtained by coprecipitation. All these cuprates are tetragonal with the I4/mmm space group. While cuprates of the type LaSrLnCu[sub 2]O[sub 6] are always insulating independent of the method of preparation, La[sub 1.6]Ba[sub 0.4]SrCu[sub 2]O[sub 6] showed an onset of superconductivity at 60K. This appears to be the second such cuprate of the A[sub n]B[sub n]O[sub 3n+1] series with n=2 exhibiting superconductivity.

• OSTI ID: 7284040
• Journal Information: Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 29:3; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES