6533b833fe1ef96bd129ca7f
RESEARCH PRODUCT
Dielectric Permittivity and Conductivity of Li0.07Na0.93Ta0.1Nb0.9O3and Li0.07Na0.93Ta0.111Nb0.889O3Solid Solutions
V. V. EfremovI. N. EfremovN. V. SidorovK. BormanisM. N. Palatnikovsubject
PermittivityNuclear magnetic resonanceMaterials scienceAnalytical chemistryCurie temperatureRelative permittivityDielectricConductivityCondensed Matter PhysicsFerroelectricityElectronic Optical and Magnetic MaterialsDielectric spectroscopyPerovskite (structure)description
Results of studies of dielectric properties and conductivity in 290–700 K range of temperature and frequencies from 25 to 106 Hz in ferroelectric perovskite solid solutions Li0.07Na0.93Ta0.1Nb0.9 O3 and Li0.07Na0.93Ta0.111Nb0.889 O3 are reported. A first-order ferroelectric phase transition proceeds in both studied compositions within the observed range of temperature. The co-precipitated Ta2yNb2(1-y)O5 pentoxides being used for synthesis of Li0.07Na0.93Ta0.111Nb0.889O3 the Curie point shifts by ∼75 K to a lower temperature while compared with Li0.07Na0.93Ta0.1Nb0.9O3 synthesised from mechanical mixture of the Ta2O5 and Nb2O5 oxides the high-frequency dielectric permittivity and ion conductivity of relatively low value of activation enthalpy increases.
year | journal | country | edition | language |
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2011-01-01 | Ferroelectrics |