Phase equilibrium study of the Y-Ba-Ni-O system and structural characterization of the new quasi-one-dimensional oxide Y sub 2 BaNiO sub 5

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90226-N· OSTI ID:6335211

Buttrey, D J; Sullivan, J D; Rheingold, A L ^[1]

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1. Univ. of Delaware, Newark (USA)

Phase equilibria in the Y{sub 2}O{sub 3}-BaO-NiO system were studied in the temperature range 1,000-1,350{degree}C in air. In addition to previously reported compositions, the new phase Y{sub 2}BaNiO{sub 5} was identified. Conditions for synthesis and stability of Y{sub 2}BaNiO{sub 5} are reported, as well as the dependence of oxygen nonstoichiometry and lattice parameters on conditions of preparation. Single crystals were obtained by rf induction melting and the structure was refined by four circle x-ray diffraction. Y{sub 2}BaNiO{sub 5} is isomorphous with Nd{sub 2}BaNiO{sub 5} and consists of isolated, highly compressed chains of corner-shared NiO{sub 6} octahedra.

• OSTI ID: 6335211
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 88:1; ISSN JSSCB; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
NICKEL COMPOUNDS
NICKEL OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS