Effect of Nd and Nb co-doping on the structural,magnetic and optical properties of multiferroic BiFeO3 nanoparticles prepared by sol-gel method |
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| Affiliation: | 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 (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, PR China;1. Materials Science Laboratory, School of Physics, Devi Ahilya University, Khandwa Road Campus, Indore 452001, India;2. Laser Material Development and Devices Division, Raja Ramanna Centre For Advanced Technology, Indore 452013, India;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. Department of Physics, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran;2. Department of Physics, Semnan University, Semnan 35195-363, Iran;3. School of Physics, Damghan University (DU), Damghan, Iran |
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| Abstract: | BiFeO3, BiFe0.95Nb0.05O3 and Bi1?xNdxFe0.95Nb0.05O3 (x=0.0, 0.05, 0.10, 0.15 and 0.20) nanoparticles are successfully synthesized via a tartaric acid-assisted sol-gel technique for the first time. The effect of Nd and Nb co-doping on the structure, morphology, and magnetic and optical properties is investigated. X-ray diffraction (XRD) and Raman measurements demonstrate that Nd3+ ions and Nb5+ ions co-doping at A and B-sites of BiFeO3 can result in a structural transformation (from single rhombohedral phase (R3c) to two coexisting phases (R3c and Pbam)). The morphology of the nanoparticles seems to be approximately cubic, and by the co-doping, the size of the nanoparticles decreases from ~132 to ~35 nm. Notable improvement in the remanent magnetization of the sample with x=0.15 is observed with a value of 0.285 emu/g, being 20 times higher than that of the undoped sample (BiFeO3). A decrease in the optical band gap is also observed in the Nd and Nb co-doped nanoparticles, indicating their favorable potential in photocatalytic applications. |
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| Keywords: | Multiferroics Sol-gel technique Co-doping Magnetic properties Optical properties |
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