Phase separation and finite size scaling in La[sub 2[minus][ital x]]Sr[sub [ital x]]CuO[sub 4+[delta]] [0[le]([ital x],[delta])[le]0. 03]
- Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
A study of the phase diagram and magnetic susceptibility [chi]([ital x],[delta],[ital T]) of the title system is reported. For [delta][congruent]0.03, [ital macroscopic] phase separation below [congruent]300 K into superconducting La[sub 1[minus][ital x]]Sr[sub [ital x]]CuO[sub 4+[delta][prime]] ([delta][prime][congruent]0.08) and nonsuperconducting La[sub 2[minus][ital x]]Sr[sub [ital x]]CuO[sub 4+[delta][prime][prime]] ([delta][prime][prime][congruent]0.00) phases, known to occur for [ital x]=0, disappears by [ital x][congruent]0.03. The behaviors of the Neel temperature [ital T][sub [ital N]]([ital x]) and [chi]([ital x],[ital T]) of the antiferromagnetic phase (0[le][ital x][approx lt]0.02, [delta][prime][prime][congruent]0.00) reveal a novel [ital microscopic] segregation of the doped holes in this phase into walls of hole-rich material separating undoped domains.
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6838113
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:2; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
ANTIFERROMAGNETISM
CHALCOGENIDES
CHEMICAL COMPOSITION
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MICROSTRUCTURE
NEEL TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SEGREGATION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE