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Magnetic and magnetoelectric response of Gd doped nickel ferrite and barium titanate nanocomposites
Parida T., Amritesh Kumar, ,
Published in American Institute of Physics Inc.
2020
Volume: 127
   
Issue: 11
Abstract
Composites of NiFe2O4 (NFO)-BaTiO3 (BTO) and NiGd0.01Fe1.99O4 (G0.01)-BTO were investigated by x-ray diffraction, magnetization, transmission electron microscopy, magnetocapacitance, and ferroelectric studies. NFO and G0.01 nanoparticles were synthesized by the sol-gel method. The crystallite size of the nanoparticles estimated from the x-ray diffraction patterns is 20-22 nm. The average crystallite sizes of NFO and G0.01 nanoparticles were estimated from the transmission electron micrographs as 26 (1) nm and 22.3 (0.3) nm, respectively. These nanoparticles were encapsulated in a BTO shell, resulting in the formation of nanocomposites. Room temperature magnetization (at 60 kOe) of G0.01 nanoparticles was found to be slightly higher than that of NFO nanoparticles, due to the larger moment of Gd3+ than that of Fe3+. Also, the magnetization of G0.01-BTO is more than that of NFO-BTO nanocomposites. The magnetoelectric effect was observed with a magnetocapacitance value of approximately -10% at 10 kHz in both the composites. © 2020 Author(s).
About the journal
JournalData powered by TypesetJournal of Applied Physics
PublisherData powered by TypesetAmerican Institute of Physics Inc.
ISSN00218979
Open AccessNo