Influence of a-site gadolinium substitution in modulating the structural and magnetic properties of LaFeO₃
Year: 2025
Type: article
Abstract: This study investigates the structural and magnetic properties of Gd-doped LaFeO₃ nanoferrites synthesized using the solution combustion method. X-ray diffraction analysis confirms the formation of orthorhombic perovskite structure, with lattice parameters decreases as Gd concentration increases up to 10%, indicating successful Gd substitution. The determined crystallite size reduces from 55 to 32 nm, and FESEM images reveal a more porous and finer-grained surface with increasing the Gd doping level. Magnetic measurements indicate that undoped LaFeO 3 exhibits weak antiferromagnetic behavior with negligible magnetization and no hysteresis. However, Gd doping significantly enhances magnetic performance. At 5 K, the saturation magnetization increases from 0 to 70 emu/g and coercivity from 0 to 18 Oe as Gd content reaches 10%. Notably, doped samples also maintain measurable magnetization and coercivity at 300 K, confirming improved room-temperature magnetic ordering. These enhancements are attributed to Gd-induced lattice distortions and the magnetic contribution of Gd 3+ ions, shifting the system toward weak ferromagnetism. The results demonstrate that Gd-doped LaFeO₃ is a promising material for spintronics and magnetic data storage applications.
Source: Discover Materials
Authors: T. Sindhu, M. Kumaresavanji, A. Robert Xavier, K. Sofiya, S. Ravi, A. T. Ravichandran
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,590
OpenAlex ID: W4416779552