TY - JOUR
T1 - Optical, ferroelectric and magnetic properties of multiferroelectric BiFeO3-(K0.5Na0.5)0.4(Sr 0.6Ba0.4)0.8Nb2O6 thin films
AU - Yao, Yingbang
AU - Mak, C. L.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by a research grant of The Hong Kong Polytechnic University (Grant No. GU694).
PY - 2014/2
Y1 - 2014/2
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/563363
UR - https://linkinghub.elsevier.com/retrieve/pii/S0925838813024924
UR - http://www.scopus.com/inward/record.url?scp=84887090771&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2013.10.077
DO - 10.1016/j.jallcom.2013.10.077
M3 - Article
SN - 0925-8388
VL - 586
SP - 448
EP - 455
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -