Enhanced multiferroic characteristics in Fe-doped Bi4Ti3O12 ceramics |
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| Authors: | XQ Chen FJ Yang WQ Cao H Wang CP Yang DY Wang K Chen |
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| Institution: | 1. School of Physics and Electronic Technology and Key Laboratory of Ferroelectric and Piezoelectric Materials and Devices of Hubei Province, Hubei University, Wuhan Hubei 430062, PR China;2. Department of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China;3. Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Xili, Shenzhen 518055, PR China;1. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei University, Wuhan, Hubei 430062, PR China;2. Faculty of Physics and Electronic Technology, Hubei University, Wuhan, Hubei 430062, PR China;3. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, PR China;1. National Laboratory of Solid State Microstructures and Physics School, Nanjing University, Nanjing 210093, PR China;2. Astronaut Research and Training Center, Beijing 100094, PR China;3. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, PR China;1. Department of Physics & Astrophysics, University of Delhi, Delhi 110007, India;2. Electroceramics Group, Solid State Physics Laboratory, Timarpur, Delhi 110054, India;3. Laser & Spectroscopy Laboratory, Department of Applied Physics, Indian School of Mines, Dhanbad 826 004, Jharkhand, India;1. Centre for Materials Science and Engineering, National Institute of Technology Hamirpur, H.P. 177 005, India;2. Department of Physics, National Institute of Technology Hamirpur, H.P. 177 005, India;3. National Physical Laboratory, New Delhi 110 012, India;4. Beant College of Engineering and Technology, Gurdaspur, Pb 143 521, India |
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| Abstract: | Modification of Bi4Ti3O12 multiferroic ceramics prepared by a conventional solid state reaction method were investigated by substituting Ti partly with Fe. The introduction of Fe does not change the layered perovskite structure of Bi4Ti3O12. Upon increasing Fe content, the remnant polarization of the samples is enhanced. The magnetism of the ceramics at room temperature develops from diamagnetism to weak ferromagnetism with increasing Fe doping. The largest variations of 15% and 6% in remnant polarization and magnetization, achieved in a Bi4Ti1Fe2O12?δ sample after poling it in a magnetic field at 1 T and a DC electric field at 30 kV/cm for 10 min, are evidence of magnetoelectric coupling between the electric dipoles and magnetic dipoles at room temperature. The present results suggest a new candidate for a room temperature multiferroic material with enhanced properties. |
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