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This article is cited in 1 scientific paper (total in 1 paper)
Electronic properties of semiconductors
Impact of (Pr, Dy) co-doping at Bi site on optical and multiferroic properties of BiFeO$_3$ ceramics prepared by sonochemical method
A. Bismibanuab, Pradeep Reddy Vangacd, M. Alagarbe, Thangaraj Selvalakshmif, I. B. Shameem Banug, M. Ashokd a Department of Physics, The Standard Fireworks Rajarathnam College for Women, Sivakasi 626123, India
b Center for Research and Post Graduate Studies in Physics, Ayya Nadar Janaki Ammal College, Sivakasi 626123, Tamil Nadu, India
c Department of Physics, Vel Tech Rangarajan Dr. Sagunthala R & D Institute of Science and Technology, Chennai, Tamil Nadu 600062, India
d New Generation Materials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli 620015, India
e Post Graduate Department of Physics, Mannar Thirumalai Naicker College, Madurai, 625004, Tamil Nadu, India
f Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
g Department of Physics, B.S.Abdur Rahman Institute of Science and Technology, Vandalur, Chennai 600 048, Tamil Nadu, India
Abstract:
A series of Pr and Dy were substituted at Bi of BiFeO3 were synthesized by sonochemical method. Keeping Pr at 5%, Dy composition was varied to obtain Bi$_{0.95-x}$Pr$_{0.05}$Dy$_x$FeO$_3$ ($x$ = 0.01, 0.03 and 0.05). The X-ray diffraction pattern and Rietveld refinement analysis reveals the rhombohedral structure for the co-doped BFO samples. The Diffuse Reflectance Spectra (DRS) exhibit bands in ultraviolet and visible region and the energy band gap values are in the range of 1.91 to 2.1 eV and gap increases with Dy increase. Our study shows that Pr and Dy dopants improved the ferroelectric and magnetic properties for low concentration of Dy indicating that they are good multiferroic materials. The excellent ferroelectric loops were recorded at the various electric fields. It was noted that the current leakage and the remnant magnetization is less for 5% Dy indicating that impact of the higher concentration of the Dy dopants. However, the lower content of Dy exhibited good results speculating the possibility of these materials for suitable applications.
Keywords:
Sonochemical, X-ray diffraction, Band gap, Ferroelectric, Leakage current density, Ferromagnetic.
Received: 11.05.2021 Revised: 30.06.2021 Accepted: 30.06.2021
Citation:
A. Bismibanu, Pradeep Reddy Vanga, M. Alagar, Thangaraj Selvalakshmi, I. B. Shameem Banu, M. Ashok, “Impact of (Pr, Dy) co-doping at Bi site on optical and multiferroic properties of BiFeO$_3$ ceramics prepared by sonochemical method”, Fizika i Tekhnika Poluprovodnikov, 55:10 (2021), 927; Semiconductors, 55:12 (2021), 914–921
Linking options:
https://www.mathnet.ru/eng/phts6629 https://www.mathnet.ru/eng/phts/v55/i10/p927
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