We report observation of more than an order of magnitude jump in saturation magnetization in BiFeO3/Ag nanocomposite at room temperature compared to what is observed in bare BiFeO3 nanoparticles. Using transmission electron microscopy together with energy dispersive x-ray spectra (which maps the element concentration across the BiFeO3/Ag interface) and x-ray photoelectron spectroscopy, we show that both the observed specific self-assembly pattern of BiFeO3 and Ag nanoparticles and the charge transfer between Ag and O are responsible for such an enormous rise in room-temperature magnetization. The BiFeO3/Ag nanocomposites, therefore, could prove to be extremely useful for a variety of applications including biomedical.
@article{arxiv.2309.02845,
title = {Charge-transfer-driven enhanced room-temperature ferromagnetism in BiFeO$_3$/Ag nanocomposite},
author = {Tania Chatterjee and Shubhankar Mishra and Arnab Mukherjee and Prabir Pal and Biswarup Satpati and Dipten Bhattacharya},
journal= {arXiv preprint arXiv:2309.02845},
year = {2023}
}
Comments
11 pages, 7 figures, accepted for publication in Nanotechnology