Studies of the formation and reduction of a mixed three-dimensional perovskite of copper and titanium

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Materials Research Bulletin; (United States)

DOI:https://doi.org/10.1016/0025-5408(94)90058-2· OSTI ID:6917537

Palacin, M R; Bassas, J; Fuertes, A; Casan-Pastor, N; Gomez-Romero, P ^[1]; Rodriquez-Carvajal, J ^[2]

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1. Campus U.A.B., Barcelona (Spain). Inst. de Ciencia de Materials
2. Centre d'Etudes de Saclay, Gif-sur-Yvette (France). Lab. Leon Brillouin

The authors report differential scanning calorimetric analyses of several reactions leading to the formation of the mixed perovskite La[sub 2]CuTiO[sub 6]. The synthesis of this oxide was carried out following three different strategies: (1) classical ceramic methods, (2) use of a layered oxide precursor (La[sub 2]CuO[sub 4]), and (3) sol-gel method. Electron diffraction and neutron diffraction data on the sol-gel product complete the structural characterization of this oxide, which presents an orthorhombically distorted perovskite structure of the GdFeO[sub 3] type, with a distortion proportional to the temperature of synthesis. Neutron diffraction shows no long-range order of Cu(II) and Ti(IV) in the structure. Finally, the reduction of this perovskite to yield La[sub 2]CuTiO[sub 5] is reported.

• OSTI ID: 6917537
• Journal Information: Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 29:9; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
FABRICATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MINERALS
MOLECULAR STRUCTURE
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
RARE EARTH COMPOUNDS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS