MUMBAI, India, Oct. 31 -- Intellectual Property India has published a patent application (202411028550 A) filed by Amity University, Manesar, Haryana, on April 8, 2024, for 'magnesium ferrite (mgfe2o4) nanoparticles and preparation method thereof.'
Inventor(s) include Preeti Thakur; Manish Naagar; Sonia Chalia; and Atul Thakur.
The application for the patent was published on Oct. 31, under issue no. 44/2025.
According to the abstract released by the Intellectual Property India: "The present invention describes Magnesium Ferrite (MgFe2O4) Nanoparticles and preparation Method Thereof. The present invention provides temperature-dependent magnetic properties of magnesium ferrite nanoparticles (MFNPs) synthesized via the citrate precursor method. Structural analyses confirm single-phase spinel-structured MFNPs with average size, lattice parameter, and interplanar spacing of ~27 nm, 8.386 A, and 2.528 A. SEM, EDX, HRTEM, and SAED techniques verify surface morphology, size distribution, and elemental composition. Magnetometer measurements from 100 K to 300 K reveal intriguing inverse temperature dependence: increasing specific saturation magnetization (26.46 emu/g to 34.78 emu/g) and coercivity (92 Oe to 187 Oe) as temperature decreases. These trends are attributed to reduced thermal energy and enhanced domain wall pinning. Weak magnetostatic interactions result in consistently low remanence ratios at all temperatures. The effective anisotropy constant increases from 2474 erg/g to 6635 erg/g with decreasing temperature, indicating low magnetocrystalline anisotropy. Extrapolation estimates the blocking temperature (~573 K), coercivity at 0 K (~249 Oe), and Curie temperature (~660 K)."
Disclaimer: Curated by HT Syndication.
