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Title: Properties of iron-doped lanthanum chromite

Abstract

This paper reports the effect of iron doping on the structural, electrical, and thermophysical properties of the most conductive rare-earth chromite, La/sub 0.8/Ca/sub 0.2/CrO/sub 3/. According to DTA, TG, and DTG studies, mixed phases of La/sub 0.8/Ca/sub 0.2/Cr/sub 1-x/Fe/sub x/O/sub 3/ (x = 0-1.0) with a perovskite structure begin to form above 1100 K. The cubic perovskite structure was found to be slightly deformed. Lattice parameters increased linearly with a rise in iron content. Doping of La/sub 0.8/Ca/sub 0.2/CrO/sub 3/ with iron markedly increased the former's conductivity at high temperatures and lowered its thermal expansion coefficient.

Authors:
; ; ; ;
Publication Date:
Research Org.:
V.I. Lenin Belorussian State Institute (USSR)
OSTI Identifier:
6096962
Alternate Identifier(s):
OSTI ID: 6096962
Resource Type:
Journal Article
Resource Relation:
Journal Name: Inorg. Mater. (Engl. Transl.); (United States); Journal Volume: 24:1; Other Information: Translated from Izv. Akad. Nauk SSSR, Neorg. Mater.; 24, No. 1, 105-108 (Jan 1988)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCIUM OXIDES; ELECTRIC CONDUCTIVITY; CHROMIUM OXIDES; IRON; METALLURGICAL EFFECTS; LANTHANUM OXIDES; CRYSTAL DOPING; CUBIC LATTICES; DIFFERENTIAL THERMAL ANALYSIS; ELECTRON MOBILITY; IRON OXIDES; LATTICE PARAMETERS; ORTHORHOMBIC LATTICES; THERMAL EXPANSION; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL ANALYSIS; CHROMIUM COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; ELECTRICAL PROPERTIES; ELEMENTS; EXPANSION; GRAVIMETRIC ANALYSIS; IRON COMPOUNDS; LANTHANUM COMPOUNDS; METALS; MOBILITY; OXIDES; OXYGEN COMPOUNDS; PARTICLE MOBILITY; PHYSICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; RARE EARTH COMPOUNDS; SCATTERING; THERMAL ANALYSIS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS 360204* -- Ceramics, Cermets, & Refractories-- Physical Properties; 360202 -- Ceramics, Cermets, & Refractories-- Structure & Phase Studies

Citation Formats

Zhuk, P.P., Vecher, A.A., Samokhval, V.V., Naumovich, E.N., and Viskup, A.P. Properties of iron-doped lanthanum chromite. United States: N. p., 1988. Web.
Zhuk, P.P., Vecher, A.A., Samokhval, V.V., Naumovich, E.N., & Viskup, A.P. Properties of iron-doped lanthanum chromite. United States.
Zhuk, P.P., Vecher, A.A., Samokhval, V.V., Naumovich, E.N., and Viskup, A.P. Wed . "Properties of iron-doped lanthanum chromite". United States.
@article{osti_6096962,
title = {Properties of iron-doped lanthanum chromite},
author = {Zhuk, P.P. and Vecher, A.A. and Samokhval, V.V. and Naumovich, E.N. and Viskup, A.P.},
abstractNote = {This paper reports the effect of iron doping on the structural, electrical, and thermophysical properties of the most conductive rare-earth chromite, La/sub 0.8/Ca/sub 0.2/CrO/sub 3/. According to DTA, TG, and DTG studies, mixed phases of La/sub 0.8/Ca/sub 0.2/Cr/sub 1-x/Fe/sub x/O/sub 3/ (x = 0-1.0) with a perovskite structure begin to form above 1100 K. The cubic perovskite structure was found to be slightly deformed. Lattice parameters increased linearly with a rise in iron content. Doping of La/sub 0.8/Ca/sub 0.2/CrO/sub 3/ with iron markedly increased the former's conductivity at high temperatures and lowered its thermal expansion coefficient.},
doi = {},
journal = {Inorg. Mater. (Engl. Transl.); (United States)},
number = ,
volume = 24:1,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1988},
month = {Wed Jun 01 00:00:00 EDT 1988}
}