Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 57, Issue -, Pages 178-184Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2016.10.023
Keywords
BiFeO3; Sol-gel method; Multiferroic; Optical; Magnetic properties; Ferroelectric properties
Categories
Funding
- Jiangsu Synergistic Innovation Center for Advanced Materials (SICAM)
- Natural Science Foundation of NJUPT [NY214129, NY214130, NY214181]
- Introducing Talent Of NJUPT [XK0070915022]
- National Natural Science Foundation of Jiangsu [KZ0070715050]
- College Postgraduate Research and Innovation Project of Jiangsu Province [KYLX_0794, KYLX15_0848]
- National Natural Science Foundation of China [51372119, 61377019, 61136003, 51173081]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX03001]
- Ministry of Education of China [IRT1148]
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Multiferroic Bi1-xEuxFe0.975Mn0.025O3 (x = 0.025, 0.05, 0.075, 0.1) nanoparticles were prepared by sol-gel route. The impacts of Eu, Mn co-doping samples on the properties of structural, morphology, optical band gap, ferroelectric and ferromagnetic have been systematic investigated. X-ray diffraction and rietveld refinement data reveal that Eu, Mn co-substitution could trigger cubic phase transformation. From the SEM images, the grains of all the samples are asymmetrical and anomalous in shape and interestingly, the particle size of the samples decrease from 200 to 500 nm to similar to 100 nm after doping. And we can obtain the content of dopants in the samples by energy-dispersive X-ray spectroscopy (EDS) analysis. UV-vis absorption spectra demonstrate a gradually decreasing of the direct optical band gap from 2.40 eV to similar to 1.49 eV with doping Eu and Mn in BFO. X-ray photoelectron spectroscopy (XPS) analyses illuminate that Eu, Mn-doping results in the increase of Fe3+ ions content in the samples. The significantly increased the remanent magnetization (Mr) and coercive field (Ec) were caused by Eu and Mn co-doping.
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