Structural and superconducting properties of La[sub 2[minus][ital x]]Sr[sub [ital x]]CuO[sub 4] as a function of Sr content

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.4163· OSTI ID:5291742

Radaelli, P G ^[1]; Hinks, D G; Mitchell, A W ^[2]; Hunter, B A; Wagner, J L ^[1]; Dabrowski, B ^[3]; Vandervoort, K G; Viswanathan, H K; Jorgensen, J D ^[2]

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1. Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Northern Illinois University, Dekalb, Illinois 60115 (United States)

We have studied the structural and superconducting properties of La[sub 2[minus][ital x]]Sr[sub [ital x]]CuO[sub 4] by neutron and x-ray powder diffraction, thermogravimetry, ac susceptibility, and dc magnetization. The kinetics of the synthesis reaction were studied in order to determine the optimum conditions for preparing single-phase samples. The room-temperature and low-temperature structural properties, as determined by neutron powder diffraction, are discussed in detail. By comparing the results of the neutron-diffraction and magnetic measurements, we conclude that superconductivity exists in both the orthorhombic and tetragonal phases. The thermodynamic conditions for the stability of the La[sub 2[minus][ital x]]Sr[sub [ital x]]CuO[sub 4] phase are also investigated.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5291742
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 49:6; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
OXIDES
OXYGEN COMPOUNDS
PHASE STABILITY
PHYSICAL PROPERTIES
POWDERS
RARE EARTH COMPOUNDS
SCATTERING
STABILITY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
STRUCTURAL MODELS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION