Ferromagnetic evolution in Nd3+, Ti4+ co-doped antiferromagnetic YFeO3

The structure-property correlation in polycrystalline powders of Y1-xNdxFe1- (4/3)yTiyO3 (x = 0.05, 0.10, 0.15; y = 0.05) was investigated. Diffuse reflectance spectra analysis revealed a reduction in the bandgap from 2.14 to 1.92 eV on increasing x. The remnant magnetization (M-r) and coercivity (H-c) increased from 0.145 to 7.50 emu/g and 0.099-8.46 kOe, respectively. The infusion of Nd3+ at Y3+ and Ti4+ at Fe3+ sites suggested that the magnetic behavior of the chosen composition of Y1-xNdxFe1-(4/3)yTiyO3 tilts away from the G-type anti-ferromagnetism. The magnetic orientation is achieved largely due to the Fe3+- O2- -Fe3+, Fe4+- O2- - Fe4+ super-exchange coupling, and Fe3+- O2- - Fe4+ double exchange coupling interactions. These materials in the present study with the enhanced magnetic and optical properties thus exhibit potential for varied applications.

Automated summary

Investigation of the structure-property correlation in the Y1-xNdxFe1-(4/3)yTiyO3 polycrystalline powders revealed a reduction in bandgap and an increase in remnant magnetization and coercivity with increasing x. Infusion of Nd3+ and Ti4+ changed the magnetic behavior, leading to deviation from G-type anti-ferromagnetism, achieved largely through super-exchange and double exchange coupling interactions. These materials with enhanced magnetic and optical properties show potential for varied applications.