Factors governing the structural phase transition temperatures of doped La sub 2 CuO sub 4 systems

Journal Article · Wed Apr 01 00:00:00 EST 1992 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1016/0022-4596(92)90060-9· OSTI ID:7039112

Whangbo, Myunghwan ^[1]

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1. North Carolina State Univ., Raleigh (United States)

The authors examined the doping dependence of Ishibashi's free energy function for La{sub 2{minus}x}Ba{sub x}CuO{sub 4}, which describes the successive HTT {yields} LTO {yields} LTT phase transitions of this doped La{sub 2}CuO{sub 4} system, in terms of the tolerance factor and the local steric pressure effect of the dopant. On the basis of these microscopic considerations, they explained the general trends in the doping dependence of the HTT {yields} LTO and the LTO {yields} LTT transition temperatures in other doped La{sub 2}CuO{sub 4} systems.

• DOE Contract Number: FG05-86ER45259
• OSTI ID: 7039112
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 97:2; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
COPPER OXIDES
LANTHANUM OXIDES
DOPED MATERIALS
EXPERIMENTAL DATA
MATHEMATICAL MODELS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
DATA
INFORMATION
LANTHANUM COMPOUNDS
MATERIALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies