Low-temperature electron transport properties of La[sub 2-x]Sr[sub x]NiO[sub 4] with 0. 5 [le] x [le] 1. 3
Journal Article
·
· Journal of Solid State Chemistry; (United States)
- Purdue Univ., West Lafayette, IN (United States)
Electrical resistivity ([rho]) measurements have been carried out on the quasi-two-dimensional oxide La[sub 2-x]Sr[sub x]NiO[sub 4] (0.5 [le] x [le] 1.3) in the temperature (T) range 4.3-300 K. A progressive decrease in resistivity and a change from semiconducting- to metallic-type behavior is observed with increasing Sr content. The [rho](T) data of samples in the composition range 0.5 [le] x [le] 0.9 closely follow the Mott variable-range-hopping-type model, whereas samples with x > 1.0 show correlated metallic-type conduction, with a weak upturn in [rho](T) at low temperatures. This resistivity upturn follows a T[sup 1/2] dependence below [approximately] 25 K, indicative of electron-electron interaction in a disordered, poorly conducting metallic phase. In the overdoped (x > 1.0) samples a progressive decrease in this upturn indicates a reduction in the electron-electron interaction strength with increasing Sr (hole) content.
- OSTI ID:
- 6769762
- Journal Information:
- Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 111:1; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TRANSFER
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TRANSFER
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENT COMPOUNDS