Ordered superstructures of oxygen ions in La<sub>2</sub>MeO<sub>4+δ</sub> (Me=Cu,Ni)

Loktev, V.M.; Tatarenko, H.M.

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Ordered superstructures of oxygen ions in La₂MeO_4+δ (Me=Cu,Ni)

Loktev, V.M.; Tatarenko, H.M.1991

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AbstractAbstract

[en] Two-dimensional commensurable ordered superstructures that can arise in La₂MeO_4+δ (Me=Cu, Ni) crystals are considered. It is shown that stable superstructures with δ=0.125, 0.25, and 0.5 are formed as long-range ordering of superstoichiometrical oxygen. The decomposition of a nonstoichiometric La₂MeO_4+δ compound into the ordered phases with stoichiometric compositions is proposed. (orig.)

Original Title

La-Cu-O; La-Ni-O

Primary Subject

MATERIALS SCIENCE (B2340)

Record Type

Journal Article

Journal

Physica Status Solidi B; ISSN 0370-1972;

; CODEN PSSBB; v. 166(1); p. 191-200

Country of publication

Germany

Descriptors (DEI)

CHEMICAL COMPOSITION, COPPER OXIDES, CRYSTAL STRUCTURE, INTERSTITIALS, LANTHANUM OXIDES, NICKEL, NICKEL OXIDES, OXYGEN IONS, STOICHIOMETRY, SUPERLATTICES, TETRAGONAL LATTICES

Descriptors (DEC)

CHALCOGENIDES, CHARGED PARTICLES, COPPER COMPOUNDS, CRYSTAL DEFECTS, CRYSTAL LATTICES, ELEMENTS, IONS, LANTHANUM COMPOUNDS, METALS, NICKEL COMPOUNDS, OXIDES, OXYGEN COMPOUNDS, POINT DEFECTS, RARE EARTH COMPOUNDS, TRANSITION ELEMENT COMPOUNDS, TRANSITION ELEMENTS

Reference NumberReference Number

23014261

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á	â	ã	ä	å	ā	æ	ç
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