Article ID Journal Published Year Pages File Type
1612676 Journal of Alloys and Compounds 2014 8 Pages PDF
Abstract
Multiferroic BiFeO3-(K0.5Na0.5)0.4(Sr0.6Ba0.4)0.8Nb2O6 (BFO-KNSBN) trilayer thin films, were epitaxially grown on MgO(0 0 1) and SrTiO3(0 0 1) by using pulsed laser deposition (PLD). Their ferroelectric, magnetic, dielectric and optical properties were investigated. It was found that both ferroelectric polarization and dielectric constant of the films were enhanced by introducing KNSBN as a barrier layer. Meanwhile, ferromagnetism of BFO was maintained. More interestingly, a double hysteresis magnetic loop was observed in the KNSBN-BFO-KNSBN trilayer films, where exchange bias and secondary phase in the BFO layer played crucial roles. Interactions between adjacent layers were revealed by temperature-dependent Raman spectroscopic measurements.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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