Role of (La,Gd) co-doping on the enhanced dielectric and magnetic properties of BiFeO3 ceramics |
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| Affiliation: | 1. School of Physics University of Hyderabad, Gachibowli, Hyderabad 500046, India;2. Department of Physics, Indian Institute of Science, Bangalore 560012, India;3. UGC-DAE Consortium for Scientific Research, R-5 Shed, B.A.R.C., Mumbai 400085, India;1. Materials Science Lab.(1), Physics Dept., Faculty of Science, Cairo University, Giza, Egypt;2. Physics Department, Faculty of Science, Zagazig University, Zagazig, Egypt;3. Materials Science and Nanotechnology Dept., Faculty of Post Graduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt;4. Basic Science Dept., Faculty of Engineering, British University in Egypt, BUE, Egypt;1. Key Laboratory for Organic Electronics & Information Displays (KLOEID), Synergetic Innovation Center for Organic Electronics and Information Displays (SICOEID), Institute of Advanced Materials (IAM), School of Materials Science and Engineering (SMSE), Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210023, PR China;2. School of Science, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210023, PR China;3. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, PR China;1. Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11000 Belgrade, Serbia;2. Center for Solid State Physics and New Materials, Institute of Physics, University of Belgrade, Pregrevica 118, 11000 Belgrade, Serbia;1. Department of Physics, Institute of Technical Education & Research, Siksha ‘O’ Anusandhan University, Khandagiri, Bhubaneswar 751030, Odisha, India;2. Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 3 Research Link, Singapore 117602, Singapore |
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| Abstract: | The effect of the La3+ and Gd3+ co-doping on the structure, electric and magnetic properties of BiFeO3 (BFO) ceramics are investigated. For the compositions (x=0 and 0≤y≤0.15) in the perovskite structured LaxGdyBi1−(x+y)FeO3 system, a tiny residual phase of Bi2Fe4O9 is noticed. Such a secondary phase is suppressed with the incorporation of ‘La’ content (x). The magnitude of dielectric constant (εr) increases progressively by increasing the ‘La’ content from x=0 to 0.15 with a remarkable decrease of dielectric loss. For x=0.15, the system LaxGdyBi1−(x+y)FeO3 exhibits highest remanent magnetization (Mr) of 0.18 emu/g and coercive magnetic field (HC) of ~1 T in the presence of external magnetic field of 9 T at 300 K. The origin of enhanced dielectric and magnetic properties of LaxGdyBi1−(x+y)FeO3 and the role of doping elements, La3+, Gd3+ has been discussed. |
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| Keywords: | C Dielectric properties C Magnetic properties Ceramics Ball milling |
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