Structural, magnetic, and transport properties of La{sub 2}Cu{sub 1{minus}{ital x}}Li{sub {ital x}}O{sub 4}

Journal Article · Thu Oct 31 23:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.12014· OSTI ID:388325

Sarrao, J L; Young, D P; Fisk, Z ^[1]; Moshopoulou, E G; Thompson, J D ^[2]; Chakoumakos, B C; Nagler, S E ^[3]

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1. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306 (United States)
2. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

Li substitutes for Cu in La{sub 2}CuO{sub 4} up to the limiting stoichiometry La{sub 2}Cu{sub 0.5}Li{sub 0.5}O{sub 4}, which has superstructure order. The effects of this in-plane hole doping on the structural and magnetic properties of La{sub 2}CuO{sub 4} are very similar to those due to Sr substitution. The tetragonal-orthorhombic structural phase transition occurs, for a given amount of Sr or Li, at nearly the same temperature, and the in-plane lattice constant of La{sub 2{minus}{ital y}}Sr{sub {ital y}}Cu{sub 1{minus}{ital x}}Li{sub {ital x}}O{sub 4} at room temperature depends only on the combined hole count ({ital x}+{ital y}) and not on the individual Sr or Li concentration. Long-range magnetic order is destroyed upon substituting 3{percent} Li for Cu, analogous to the effect of Sr substitution on {ital T}{sub N{acute e}el}. However, the holes introduced by Li substitution are bound. The resistivity as a function of temperature is nonmetallic for all Li concentrations. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 388325
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
LANTHANUM OXIDES
LITHIUM OXIDES
MAGNETIC PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
SUBSTITUTION