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arXiv · 2309.02845

Charge-transfer-driven enhanced room-temperature ferromagnetism in BiFeO$_3$/Ag nanocomposite

Tania Chatterjee·Shubhankar Mishra·Arnab Mukherjee·Prabir Pal·Biswarup Satpati·Dipten Bhattacharya
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Abstract

We report observation of more than an order of magnitude jump in saturation magnetization in BiFeO$_3$/Ag nanocomposite at room temperature compared to what is observed in bare BiFeO$_3$ nanoparticles. Using transmission electron microscopy together with energy dispersive x-ray spectra (which maps the element concentration across the BiFeO$_3$/Ag interface) and x-ray photoelectron spectroscopy, we show that both the observed specific self-assembly pattern of BiFeO$_3$ and Ag nanoparticles and the charge transfer between Ag and O are responsible for such an enormous rise in room-temperature magnetization. The BiFeO$_3$/Ag nanocomposites, therefore, could prove to be extremely useful for a variety of applications including biomedical.

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Tania Chatterjee, Shubhankar Mishra, Arnab Mukherjee, Prabir Pal, Biswarup Satpati, Dipten Bhattacharya. 2023-09-06. Charge-transfer-driven enhanced room-temperature ferromagnetism in BiFeO$_3$/Ag nanocomposite. https://doi.org/10.1088/1361-6528%2Facf6c6

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