Study of Enhanced Magnetodielectricity in Gd3+ Substituted Bi2Fe4O9

The structural, magnetic, dielectric, and magnetodielectric characteristics of orthorhombic Bi2(1-x)Gd2xFe4O9 (x = 0, 0.015) ceramics synthesised via the solid state reaction approach are investigated in this paper. Temperature in the room The structural deformation of the ceramics is shown by Rietveld refinement of the X-ray diffraction pattern due to smaller ionic radii Gd3+ (1.05) substitution at the Bi3+ (1.17) site. Magnetic studies revealed a higher antiferromagnetic transition temperature (TN) in x = 0.015 (254 K) than in the BFO (250 K), as well as an increase in magnetism owing to Gd3+ and Fe3+ ion interaction. Around the magnetic transition temperature, a contemporaneous anomaly in dielectric and tan loss plots showed probable magnetoelectric coupling (MEC) in both materials, and the MEC coefficient (Y) is estimated by YM2. For x = 0.015, there was a 100 percent increase in magnetodielectric response.

Author(s) Details:

S. R. Mohapatra,
Department of Physics & Mathematics, Faculty of Sciences, Sri Sri University, Cuttack-754006, Odisha, India.

Satya N. Tripathy,
Department of Physics & Mathematics, Faculty of Sciences, Sri Sri University, Cuttack-754006, Odisha, India.

A. K. Singh,
Department of Physics and Astronomy, National Institute of Technology, Rourkela-769008, Odisha, India.

S. D. Kaushik,
UGC-DAE Consortium for Scientific Research Mumbai Centre, R-5 Shed, BARC, Mumbai-400085, India.

Please see the link here: https://stm.bookpi.org/NTPSR-V2/article/view/6617