Transition from AFM Spin Canting to Spin Glass-AFM Exchange as Particle Size Decreases in LaFeO₃.

ABSTRACT: In this work, we have studied structural and magnetic properties of LaFeO₃ as a function of the particle size d, from bulk (d >> 1 µm) to nanoscale (d ≈ 30 nm). A large number of twins were observed for large particles that disappear for small particle sizes. This could be related to the softening of the FeO₆ distortion as particle size decreases. It was observed that the bulk sample showed spin canting that disappeared for d ~ 125 nm and can be associated with the smoothening of the orthorhombic distortion. On the other hand, for d < 60 nm, the surface/volume ratio became high and, despite the high crystallinity of the nanoparticle, a notable exchange effect bias appeared, originated by two magnetic interactions: spin glass and anti

SUBMITTER: Alshalawi D 

PROVIDER: S-EPMC10224450 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature