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RESEARCH PRODUCT
DC electrical resistivity of Nb-Doped BaTiO3 and EPR measurements
Mario MaglioneC. GillotB. JannotJean-pierre Michenaudsubject
Free electron modelCondensed matter physicsChemistryAnalytical chemistryGeneral ChemistryConductivityAtmospheric temperature rangeCondensed Matter PhysicsPolaronlaw.inventionTransition pointElectrical resistivity and conductivitylawMaterials ChemistryElectron paramagnetic resonanceSingle crystaldescription
DC electrical resistivity measurements along the c-axis of Nb-doped BaTiO3 single crystals are presented in a wide range of temperature, covering the four phases, with special attention to the rhomboedral one. The temperature dependence of the conductivity leads to convincing arguments in favour of a polaronic mechanism. Below the orthorhombic-rhomboedral transition point, a strong increase of the resistivity is observed. The correlation of this behavior with EPR analysis in the same temperature range, is consistent with a sharp trapping of the ''free'' electrons, when the temperature decreases.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-12-01 | Solid State Communications |