Published May 1991 | Version v1
Journal article Metadata-only

Segnetoelectric phases of La2(Ti, Sc, B5)2O7 (B5 -Nb,Ta) with lamellar perovskite-like structure

Creators

  • 1. Nauchno-Issledovatel'skij Fiziko-Khimicheskij Inst., Moscow (Russian Federation)
  • 2. Kievskij Gosudarstvennyj Univ., Kiev (Ukraine)

Description

Ferroelectric and some electrophysical properties of phases indicated in the title, possessing lamellar perovskite-like structure are studied. It is shown that under heterovalent substitution of titanium atoms in La2Ti2O7 La4Ti4-xScx/2Nbx/2O14 (X≤2.75) and La4Ti4-xScx/2Tax/2O14 (X≤2.25) phases preserve ferroelectric properties. Titanium atom subtitution for scandium and niobium (tantalum) atoms in La2Ti2O7 leads to the reduction of the value of dielectric permittivity of phases with lamellar perovskite-like structure, which possess electron conductivity

Additional details

Additional titles

Original title (Russian)
Сегнетоэлектрические фазы Ла

Publishing Information

Journal Title
Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy
Journal Volume
27
Journal Issue
5
Journal Page Range
p. 975-978.
ISSN
0002-337X
CODEN
IVNMAW

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
24005477
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ELECTRIC CONDUCTIVITY; FERROELECTRIC MATERIALS; LANTHANUM OXIDES; LATTICE PARAMETERS; NIOBIUM OXIDES; PERMITTIVITY; PHASE STUDIES; SCANDIUM OXIDES; TANTALUM OXIDES; THERMOELECTRIC PROPERTIES; TITANIUM OXIDES
Descriptors DEC
CHALCOGENIDES; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; MATERIALS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCANDIUM COMPOUNDS; TANTALUM COMPOUNDS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS