Optical, ferroelectric and magnetic properties of multiferroelectric BiFeO3-(K0.5Na0.5)0.4(Sr 0.6Ba0.4)0.8Nb2O6 thin films
Type
ArticleAuthors
Yao, YingbangMak, C. L.
KAUST Department
Advanced Nanofabrication, Imaging and Characterization Core LabCore Labs
Nanofabrication Core Lab
Date
2014-02Permanent link to this record
http://hdl.handle.net/10754/563363
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Show full item recordAbstract
Multiferroic BiFeO3-(K0.5Na0.5) 0.4(Sr0.6Ba0.4)0.8Nb 2O6 (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. © 2013 Elsevier B.V. All rights reserved.Citation
Yao, Y. B., & Mak, C. L. (2014). Optical, ferroelectric and magnetic properties of multiferroelectric BiFeO3–(K0.5Na0.5)0.4(Sr0.6Ba0.4)0.8Nb2O6 thin films. Journal of Alloys and Compounds, 586, 448–455. doi:10.1016/j.jallcom.2013.10.077Sponsors
This work was supported by a research grant of The Hong Kong Polytechnic University (Grant No. GU694).Publisher
Elsevier BVJournal
Journal of Alloys and Compoundsae974a485f413a2113503eed53cd6c53
10.1016/j.jallcom.2013.10.077