Rapid synthesis and magnetic property characterization of Mg²⁺ doped Co₃O₄ nanostructures

Abstract

Utilizing combustion method Mg substituted Co3O4 nanoparticles were prepared using the fuel L-alanine. The formation of the cubic spinel structure in the prepared undoped Co3O4 and Mg substituted Co3O4 is assured by X-ray diffraction (XRD) studies. The average crystallite size was observed to lie within 48.6 nm to 17.3 nm. The microstructural analysis shown that the prepared nanoparticles are porous in nature comprising of intragranular pores and melded grains with distinct grain boundaries. The bandgap values were determined using Kubelka–Munk (K–M) technique which was found to fall within 1.87–3.64 eV range. Interestingly, para-/superpara- magnetic characteristics was seen at ±15KOe by the magnetic studies. The FT-IR bands at 662 and 569 cm⁻¹are attributed to the Co–O stretching mode of cubic spinel Co₃O₄ structure for the prepared samples. .

KEYWORDS:

• Co_1−xMg_xO₄ spinel nanoparticles
• structural properties
• thermal properties
• magnetic properties

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors (R. Jothi Ramalingam) express thankful and financial support by the Researchers Supporting Project Number (RSP-2021/354) King Saud University, Riyadh, Saudi Arabia.