Low temperature synthesis and influence of rare earth Nd3+ substitution on the structural, magnetic behaviour of M-type barium hexa ferrite nanomaterials

Abstract

The (Nd3+) substituted M-type Barium hexaferrite (BaFe12-x NdxO19) with (Nd3+) concentration (x = 0, 0.25, 0.50, 0.75, 1.00) is prepared using citrate precursor based sol gel process. The X-ray intensity pattern confirms that synthesized nanomaterials were in the pure phase and they possess hexagonal crystal structure having P63/mmc space group. Crystallite size and lattice strain values decreased with increment in concentration of Nd3+ in Barium Hexaferrite lattice. The Williamson-Hall plot is utilized for calculating these structural parameters. The Saturation Magnetization and Anisotropy values are highest for (0.25) mole (Nd3+) in Barium Hexaferrite lattice. All the prepared nanomaterials shows pure phase with good magnetization (43.11 emu/g–56.90 emu/g), retentivity (21.41 emu/g–29.02 emu/g) at room temperature. Curie temperature was found to be shifted to 429 °C from 446 °C with respect to increasing molar concentration of Neodymium.