International Journal of Nanoscience and Nanotechnology

International Journal of Nanoscience and Nanotechnology

Exploring multiferroic properties in new lead free ceramic (Sr0.95Ba0.05)(Mn0.5Nb0.5)O3

Document Type : Research Paper

Authors
RAJ KISHORE MISHRA 1
Srikanta Behera 2
RAJ MOHAN MOHANTY 2
Sabyasachi Parida 2
Muhammad Shahid Anwar 3
Priyabrata Nayak 4
Bhabani Sankar Tripathy 5
1 MAHARISHI COLLEGE OF NATURAL LAW, BHUBANESWAR
2 Department of Physics, C.V.Raman Global university, Bhubaneswar, Odisha, India
3 CSIR-Instituteof Minerals and MaterialsTechnology,Bhubaneswar, Odisha,India
4 CSIR-Instituteof Minerals and Materials Technology, Bhubaneswar, Odisha,India & Academy of Scientific and Innovative Research(AcSIR), Ghaziabad, Uttar Pradesh, India
5 Department of Physics, ITER, Siksha ‘O’ Anusandhan University, Bhubaneswar, Odisha, India
10.22034/ijnn.2025.2044142.2592
Abstract
A new lead free Ceramic material of complex perovskite structure (ABO3) having formula (Sr0.95Ba0.05)(Mn0.5Nb0.5)O3 have been prepared by solid-state reaction technique. X-Ray Diffraction pattern of (Sr0.95Ba0.05)(Mn0.5Nb0.5)O3 at ambient temperature shows that the sample has a single phase tetragonal perovskite structure. Surface morphology studied by scanning electron microscopy (SEM) shows polycrystalline nature of the prepared material with grains of uniform size having little voids. The dielectric parameters (relative permittivity or dielectric constant and loss tangent) of the samples were determined in a wide range of frequency (100Hz to 5MHz) and temperature range of 25 oC to 250 oC. Overall frequency response of the material in this observed frequency window shows low frequency relaxation phenomena, deviation from Debye type behavior. At all the frequencies the permittivity shows broad diffused peak at around 215 oC which may be attributed to ferro to paraelectric transition. The ac conductivity spectra obeys Jonscher’s universal power law. The optical band gap calculated from diffuse reflectance spectroscopy (DRS) data is 3.06 eV. Magnetization (M) in both zero-field-cooled (ZFC) and field-cooled (FC) modes measured at 0.05T shows gradual increase of magnetic field with the decrease in temperature below 300K with a magnetic order transition below 40K. Also, M-H curve at 10K shows nonlinear pattern with a small opening in hysteresis loop indicating some ferromagnetic component at low temperature
Keywords
Ferroelectric
Multiferroic
Ceramic, Impedance
Magnetic Order
Subjects
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International Journal of Nanoscience and Nanotechnology
Volume 21, Issue 1
Winter 2025
Pages 11-19