http://repository.iitr.ac.in/handle/123456789/24570| Title: | Enhanced magnetoelectric coupling response in hot pressed BiFeO3 and polymer composite films: Effect of magnetic field on grain boundary and grain resistance |
| Authors: | Kumar A. Patel P.K. Yadav, Kamlesh Kumar Singh Y. Kumar N. Abdullah Sharma G. Singh S. |
| Published in: | Materials Research Bulletin |
| Abstract: | We report the effect of grain boundary resistance (GBR) and grain resistance (GR) on the magnetoelectric coupling in the multiferroic composite thick films of BiFeO3 (BFO) nanocrystalline powder and poly vinylidene-fluoride (PVDF) polymer. These composite thick films of thickness ∼ 0.2 mm were prepared via hot pressing with the weight ratio of BFO powder and PVDF polymer as 70:30 (abbreviated as BFO70), 60:40 (abbreviated as BFO60), 50:50 (abbreviated as BFO50) and 40:60 (abbreviated as BFO40), respectively. Impendence investigations (Cole-Cole plots) of these thick films demonstrate that the GBR is significantly changed on the application of magnetic field (8 kOe) in comparison to the GR. Our results indicate that the GBR plays an important role in strengthening of magnetoelectric (ME) effect in BFO-PVDF system. In addition, the ME coupling study indicates that the BFO50 sample shows better results (α33 ∼ 2.7 mV/cm-Oe) and may be suitable for device and sensor applications. © 2021 Elsevier Ltd |
| Citation: | Materials Research Bulletin, 145 |
| URI: | https://doi.org/10.1016/j.materresbull.2021.111527 http://repository.iitr.ac.in/handle/123456789/24570 |
| Issue Date: | 2021 |
| Publisher: | Elsevier Ltd |
| Keywords: | Magnetic materials Multiferroics Sol-gel chemistry X-ray diffraction |
| ISSN: | 255408 |
| Author Scopus IDs: | 57206266783 57198995172 7005825645 57214304067 57214110321 57226895234 57372696300 22964262600 |
| Author Affiliations: | Kumar, A., Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India Patel, P.K., Department of Physics, Maulana Azad National Institute of Technology, Bhopal, 462003, India Yadav, K.L., Department of Physics, Indian Institute of Technology Roorkee247667, India Singh, Y., Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India Kumar, N., Sri Guru Gobind Singh College, Chandigarh, 160019, India Abdullah, Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India Sharma, G., Department of Physics, Tilak Dhari P G College, Jaunpur, 222002, India Singh, S., Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India |
| Funding Details: | Dr. Amit Kumar would like to thank CSIR for providing a salary for Senior Research Associateship (Pool Scientist). Amit Kumar also grateful to Prof. K. G. Suresh (Physics Department, IIT Bombay) and Prof. R. Ranjan (Materials Engineering Department, IISc Bangalore) for encouragement and support. S. Singh gratefully acknowledges the financial support received from Science and Engineering Research Board (EEQ/2020/000373), Govt. of India. Council of Scientific and Industrial Research, India, CSIR; Science and Engineering Research Board, SERB: EEQ/2020/000373 |
| Corresponding Author: | Singh, S.; Special Centre for Nanoscience, India; email: satyambd@gmail.com |
| Appears in Collections: | Journal Publications [PH] |
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