6533b82cfe1ef96bd128fe8a
RESEARCH PRODUCT
Relaxor ferroelectric ceramics of LiTaO3-type
H. B. InJean RavezJ. M. ReauMario Maglionesubject
Materials scienceCondensed matter physicsCell volumeActivation energyConductivityCondensed Matter PhysicsFerroelectricityElectronic Optical and Magnetic MaterialsNuclear magnetic resonancevisual_artDispersion (optics)visual_art.visual_art_mediumRelaxation (physics)CeramicRelaxor ferroelectricdescription
Abstract A ferroelectric relaxation has been identified in Li1-xCax (Ta1-xZrx)O3(x = 0.15 and 0.20) ceramics with LiTaO3-type structure. The relaxation frequency fr is minimum and the dispersion step (ϵ′S - ϵ′∞) is maximum at TC. When x increases, a higher conductivity associated with a lower activation energy and a decrease of the magnitude of fr at Tc are observed, while the unit cell volume becomes larger, TC lower and the transition more diffuse.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-03-01 | Ferroelectrics |