K[sub 1[minus]x]La[sub x]Ca[sub 2[minus]x]Nb[sub 3]O[sub 10], a layered perovskite series with variable interlayer cation density, and LaCaNb[sub 3]O[sub 10], a novel layered perovskite oxide with no interlayer cations

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1993.1042· OSTI ID:6612176

Uma, S; Gopalakrishnan, J ^[1]

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1. Indian Inst. of Science, Bangalore (India)

A series of layered perovskite oxides of the formula K[sub 1[minus]x]La[sub x]Ca[sub 2[minus]x]Nb[sub 3]O[sub 10] for 0 < x [le] 1.0 have been prepared. All the members are isostructural, possessing the structure of KCa[sub 2]Nb[sub 3]O[sub 10]. The interlayer potassium ions in the new series can be ion-exchanged with protons to give H[sub 1[minus]x]La[sub x]Ca[sub 2[minus]x]Nb[sub 3]O[sub 10]. The latter readily forms intercalation compounds of the formula (C[sub n]H[sub 2n+1]NH[sub 3])[sub 1[minus]x]La[sub x]Ca[sub 2[minus]x]Nb[sub 3]O[sub 10], just as the parent solid acid HCa[sub 2]Nb[sub 3]O[sub 10]. The end member LaCaNb[sub 3]O[sub 10] containing no interlayer cations is a nove layered perovskite oxide, being a n = 3 member of the series A[sub n[minus]1]B[sub n]X[sub 3n+1]. 16 refs., 5 figs., 5 tabs.

• OSTI ID: 6612176
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 102:2; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
&amp; Refractories-- Structure &amp; Phase Studies
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARYONS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DENSITY
DIFFRACTION
ELEMENTARY PARTICLES
FERMIONS
HADRONS
ION EXCHANGE
IONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LAYERS
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
PROTONS
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION