Temperature and composition dependence of the tetragonal-orthorhombic distortion in La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub delta/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We have mapped the temperature and composition dependence of the tetragonal-orthorhombic phase-transition temperature T/sub d/ in the high-temperature superconductor La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub delta/ using high-resolution powder x-ray diffraction and measurements of the thermal expansion. The maximum volume fraction of ideal diamagnetism occurs in the composition range where T/sub d/ is approaching the superconducting transition. In the composition range x>0.20 where no orthorhombic distortion is observed above 12 K, no bulk superconductivity is observed in La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub delta/.
- Research Organization:
- ATandT Bell Laboratories, Murray Hill, New Jersey 07974
- OSTI ID:
- 6878209
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:13; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Composition-dependent superconductivity in La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub delta/
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Tue Mar 31 23:00:00 EST 1987
· Phys. Rev. B: Condens. Matter; (United States)
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OSTI ID:6046879
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Journal Article
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Sun Oct 01 00:00:00 EDT 1995
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·
OSTI ID:105934
Disappearance of superconductivity in overdoped La[sub 1. 15[minus][ital x]]Pr[sub 0. 85]Sr[sub [ital x]]CuO[sub 4] and the orthorhombic-tetragonal phase boundary
Journal Article
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Thu Mar 31 23:00:00 EST 1994
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:6716021
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
DIAMAGNETISM
DIFFRACTION
EXPANSION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETISM
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
QUANTITY RATIO
RARE EARTH COMPOUNDS
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
DIAMAGNETISM
DIFFRACTION
EXPANSION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETISM
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
QUANTITY RATIO
RARE EARTH COMPOUNDS
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION