A neutron diffraction study of stoichiometric and reduced LaCr{sub 0.6}Ni{sub 0.4}O{sub 3}

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(96)00199-7· OSTI ID:477163

Skowron, A; Petric, A ^[1]; Moudallal, H; Jacobson, A J ^[2]; Mims, C A ^[3]

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1. McMaster Univ., Hamilton, Ontario (Canada). Dept. of Materials Science and Engineering
2. Univ. of Houston, TX (United States). Dept. of Chemistry
3. Univ. of Toronto, Ontario (A). Dept. of Chemical Engineering and Applied Chemistry

The structures of LaCr{sub 0.6}Ni{sub 0.4}O{sub 3} and LaCr{sub 0.6}Ni{sub 0.4}O{sub 2.8} have been determined by Rietveld refinement of neutron powder diffraction data. LaCr{sub 0.6}Ni{sub 0.4}O{sub 3} adopts the orthorhombic GdFeO{sub 3} structure with space group Pnma, a = 5.4735(1) {angstrom}, b = 7.7568(2) {angstrom}, c = 5.5105(1) {angstrom}, V = 233.96 {angstrom}{sup 3}, Z = 4. LaCr{sub 0.6}Ni{sub 0.4}O{sub 2.8} is rhombohedral, with space group R{bar 3}c, and a = 5.5264(3) {angstrom}, c = 13.2991(4) {angstrom}, V = 351.754 {angstrom}, Z = 6.

• Sponsoring Organization: Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada); Welch (Robert A.) Foundation, Houston, TX (United States); Texas Center for Superconductivity, Houston, TX (United States)
• OSTI ID: 477163
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 32; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM OXIDES
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
LANTHANUM OXIDES
LATTICE PARAMETERS
NEUTRON DIFFRACTION
NICKEL OXIDES
ORTHORHOMBIC LATTICES
SAMPLE PREPARATION
TRIGONAL LATTICES