Suppressing the non-switching contribution in BiFeO3-Bi4Ti3O12 based thin film composites to produce room-temperature multiferroic behavior |
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| Affiliation: | 1. Universidad Antonio de Nebrija, Industrial Engineering Department, Campus de Madrid-Princesa, Madrid 28015, Spain;2. Department of Electroceramics, Instituto de Cerámica y Vidrio (CSIC), Madrid 28049, Spain;3. Polytech Grenoble. École d’ingénieurs - Grenoble INP, Université Grenoble Alpes, France;4. Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Madrid 28049, Spain;1. Division of Nonmetallic-Inorganic Materials, Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, Germany;2. Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria;1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;2. State Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, China;3. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China;1. School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China;2. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China;1. Expert Centre of Innovative Materials, Thailand Institute of Scientific and Technological Research, Pathum Thani, Thailand;2. Centre for Medical and Industrial Ultrasonics, James Watt School of Engineering, University of Glasgow, Glasgow, Scotland, UK;3. Faculty of Engineering, Naresuan University, Phitsanulok, Thailand;4. NMPA Key Laboratory for Pharmaceutical Excipients Engineering Technology Research, Hunan Institute for Drug Control, Changsha, China;5. Sunnybrook Research Institute and Department of Medical Biophysics, University of Toronto, Toronto, Canada;6. School of Metallurgy and Materials, University of Birmingham, UK |
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| Abstract: | Exploiting the exceptional multiferroic characteristics of BiFeO3-based systems depends largely on controlling the high leakage currents that often constrain the ferroelectric response of this material. This limiting circumstance is even more restrictive in the film geometry, where the high area/volume ratio can add complications related to the uncontrolled loss of a particularly volatile element such as bismuth. In this work we address the suppression of such non-switching contribution by preparing BFO-BiT thin film composites and using a low-temperature processing protocol in a fully aqueous medium. With an adequate and systematic doping of both oxides, the produced composites show both magnetic and ferroelectric response at room temperature, in a process that is also related to the fine matching between the two crystal lattices involved. The results obtained further indicate the possibility of applying a simple, sustainable protocol with high scalability prospects to fabricate exploitable multiferroic systems, i.e. with no need for large energy inputs nor sophisticated equipment. |
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| Keywords: | Multiferroics Thin films Low-temperature aqueous solution processing |
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