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RESEARCH PRODUCT
Anomalies of dielectric properties and conductivity in single domain LiNbO3:Zn crystals
N. V. SidorovD. V. ManukovskayaM. N. PalatnikovO. V. MakarovaK. BormanisI. N. EfremovI. V. BiryukovaV. A. Sandlersubject
010302 applied physicsMaterials scienceCondensed matter physicsAnnealing (metallurgy)Lithium niobateMineralogyModulus02 engineering and technologyDielectricConductivity021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesPiezoelectricityElectronic Optical and Magnetic Materialschemistry.chemical_compoundchemistryControl and Systems Engineering0103 physical sciencesMaterials ChemistryCeramics and CompositesElectrical and Electronic EngineeringSingle domain0210 nano-technologyAfter treatmentdescription
ABSTRACTA study of the temperature dependence of dielectric constant, conductivity, and piezoelectric modulus in the single-domain state of LiNbO3 crystals modified by Zn admixture at threshold concentration is reported. Unipolarity of the LiNbO3:Zn crystals is observed to increase after treatment of brand-new samples by high-temperature electro-diffusion annealing and by subsequent high-temperature annealing of short-circuited samples. The observed effects are explained as a result of meta-stable residual domains collapsing at high temperature the collapse being assisted by disintegration of charged clusters stabilizing domain walls. The rise of unipolarity is accompanied by anomalies on the σ(T) and ϵ(T) dependences and by a significant increase of the value of the piezo-modulus.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-06-17 | Integrated Ferroelectrics |