Ferroelectric properties and dynamic scaling of < 100 > oriented (K0.5Na0.5)NbO3 single crystals

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dc.contributorVirginia Techen
dc.contributor.authorGupta, Sanjayen
dc.contributor.authorPriya, Shashanken
dc.contributor.departmentCenter for Energy Harvesting Materials and Systems (CEHMS)en
dc.contributor.departmentCenter for Intelligent Material Systems and Structures (CIMSS)en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2014-01-10en
dc.date.accessioned2014-01-21T19:28:03Zen
dc.date.available2014-01-21T19:28:03Zen
dc.date.issued2011-06-01en
dc.description.abstractIn this letter, we report the dielectric and ferroelectric (FE) characteristics of potassium sodium niobate (K0.5Na0.5NbO3) single crystals grown by flux method. Orientation analysis of as-grown cubical-shaped crystals was conducted by electron backscattered diffraction technique revealing the < 100 > crystallographic orientation of two opposing major faces. Annealed crystals were found to exhibit FE orthorhombic to FE tetragonal transition temperature of 200 degrees C and Curie temperature of 407 degrees C. Poled < 100 > oriented crystals had longitudinal piezoelectric constant of 148 pC/N. Dielectric measurement as a function of temperature was conducted to determine the second order parameter in Gibbs free energy expansion. Dynamic hysteresis analysis on these crystals showed the power law relations to be of the form < A > proportional to f(0.47Eo-0.85)E(o)(1.45f0.14) and < A > proportional to f(0.04)E(o) below and above the coercive field. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600058]en
dc.description.sponsorshipOffice of Basic Energy Science, Department of Energy DE-FG02-07ER6480en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGupta, Shashaank; Priya, Shashank, "Ferroelectric properties and dynamic scaling of < 100 > oriented (K0.5Na0.5)NbO3 single crystals," Appl. Phys. Lett. 98, 242906 (2011); http://dx.doi.org/10.1063/1.3600058en
dc.identifier.doihttps://doi.org/10.1063/1.3600058en
dc.identifier.issn0003-6951en
dc.identifier.urihttp://hdl.handle.net/10919/24920en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/apl/98/24/10.1063/1.3600058en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectHysteresisen
dc.subjectModelen
dc.subjectSystemsen
dc.subjectOxidesen
dc.subjectPhysicsen
dc.titleFerroelectric properties and dynamic scaling of < 100 > oriented (K0.5Na0.5)NbO3 single crystalsen
dc.title.serialApplied Physics Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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