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Magnetic and dielectric properties of Eu-doped BiFeO3 nanoparticles by acetic acid-assisted sol-gel method

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4 Author(s)
Chakrabarti, Kaushik ; Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India ; Das, Kajari ; Sarkar, Babusona ; De, S. K.

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The BiFeO3 nanoparticles, having an average size of 13 nm, were synthesized by a simple sol-gel method. The samples possess single phase up to 2% Eu doping at the Bi site. The uncompensated spin moments on the surface and the modification of cycloidal spin structure due to the small size (13 nm) result in a ferromagnetic phase of the BiFeO3 nanoparticles. The successful doping of magnetically active Eu3+ ions in BiFeO3 nanoparticles improves the ferromagnetic property. The similar dependency of saturation magnetization, coercive field, and dielectric constant on Eu doping concentration reveals that a correlation between magnetic and dielectric properties exists in Eu-doped BiFeO3 nanoparticles.

Published in:

Journal of Applied Physics  (Volume:110 ,  Issue: 10 )