6533b7cefe1ef96bd1257952
RESEARCH PRODUCT
Polarization Switching in Heterophase Nanostructures: PLZT Relaxor Ceramics
E. L. RumyantsevD. V. PelegovV. Ya. ShurAndris SternbergO. V. YakutovaM. KosecG. G. Lomakinsubject
NanostructureMaterials scienceCondensed matter physicsSolid-state physicschemistry.chemical_elementDepolarizationCondensed Matter PhysicsPolarization (waves)Electronic Optical and Magnetic MaterialsCondensed Matter::Materials Sciencechemistryvisual_artvisual_art.visual_art_mediumLanthanumExternal fieldInterphaseCeramicdescription
The polarization switching is experimentally investigated in hot-pressed PLZT-x/65/35 ceramics with a lanthanum content from 5 to 12 at. %. The specific features in the temperature dependence of the polarization switching in a heterophase state are interpreted by analyzing the change in the switched charge measured over wide ranges of fields and temperatures. Particular emphasis is placed on the role of depolarization fields induced by interphase boundaries. A model of the evolution of polydomain nanostructures with a change in the temperature and in the response to an external field is considered. It is assumed that the low-temperature dielectric anomaly and the temperature hysteresis are associated with the loss of stability of a large-scale domain structure and its transformation into a nanodomain state.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-01-01 | Physics of the Solid State |