Kinetics of polarization switching in relaxor-ferroelectric Sr_0.5Ba_0.5Nb₂O₆ crystal doped with chromium

摘要

The kinetics of polarization reversal process in relaxor-ferroelectric Sr_0.5Ba_0.5Nb₂O₆ (SBN : 50) crystal is studied by switching current registration. The temporal behavior of the polarization is analyzed in terms of the domain dynamics. It has been found that the observed stretched-exponential behavior of the polarization relaxation can be the result of a wide distribution of relaxation times. It is suggested that the distribution of relaxation times may be attributed to a nonuniform distribution of the local coercive fields within the crystal structure.View full textDownload full textKeywordspolarization switching, relaxors, domain dynamics, coercive fieldRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/01411590802457946