Published June 1987
| Version v1
Journal article
Bulk superconductivity in Lasub(1.85)Srsub(0.5)CuO4 and in Lasub(1.6)Eusub(0.25)Srsub(0.15)CuO4
Description
Metallic - oxygen compounds in pseudo ternary systems La-Cu-M-O with M=Sr, Pb have been prepared by high temperature solid state reaction under different conditions. The susceptibility measurements on Lasub(1.85)Srsub(0.15)CuO4 show the onset of superconductivity at Tsub(C) = 41K and Hα1 of 450 Oe. at 4.1K. Substitution of Sr by Pb destroys this superconductivity. For the Eu doped sample Tsub(C) = 17K, while Lasub(1.6)Ysub(0.25)Srsub(0.15)CuO4 does not exhibit superconductivity down to 4.1K. The tetragonal lattice of La-Sr-Cu-O shrinks in the a axis and expands in the c axis compared to R2CuO4 R=Pr-Gd. The role of this distortion in the metallic conductivity and superconductivity mechanism is discussed. (author)
Additional details
Publishing Information
- Journal Title
- Solid State Commun.
- Journal Volume
- 62
- Journal Issue
- 12
- Series
- Solid State Commun.
- Journal Page Range
- 791-794
- ISSN
- 0038-1098
- CODEN
- SSCOA
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 18094224
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CRITICAL FIELD; EUROPIUM OXIDES; LANTHANUM OXIDES; LEAD ADDITIONS; MAGNETIC SUSCEPTIBILITY; STRONTIUM OXIDES; SUPERCONDUCTIVITY; TETRAGONAL LATTICES; VERY LOW TEMPERATURE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; EUROPIUM COMPOUNDS; LANTHANUM COMPOUNDS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS