Effect of Sm-Doping on Magnetic and Dielectric Properties of BiFeO₃

Abstract:

Polycrystalline Bi1-xSmxFeO3 multiferroic samples in the range 0 ≤ x ≤ 0.1 were prepared via solid state reaction method. The effect of samarium ion (Sm3+) doping at the bismuth site in multiferroic BiFeO3 structure and its relation with magnetic and dielectric properties were investigated. X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Vibrating Sample Magnetometer (VSM) and Impedance Analyzer were used to characterize the structure and the properties of the composition. The XRD results showed that all the compounds are rhombohedral distorted perovskite structure (R3C). The average grain size identified by SEM were 2.61 µm and decreased to 1.18 µm by introducing the element of Sm doping. At room temperature, all samples showed a spontaneous magnetization which was enhanced by doping with Sm3+ ion. The dielectric constant and dielectric loss decreased inversely proportional to the frequency from 102 to 106 Hz.

• Periodical: Advanced Materials Research (Volume 501)
• Pages: 329-333
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.501.329
• Online since: April 2012
• Authors: R.S.N. Ain, S.A. Halim, Mansor Hashim
• Keywords: BiFeO₃, Dielectric, Magnetic, Multiferroic, Sm-Doping

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