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Please use this identifier to cite or link to this item: 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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