Advanced Physical Research

ISSN Print: 2663-8436

ISSN Online: 3105-3548

Advanced Physical Research is an open access Journal, publishing fully peer-reviewed original and review papers as well as brief reports on topics in all areas of theoretical and applied physics. The journal provides a platform for researchers who wish to summarize a field of physics research and share this work as widely as possible. The published papers provide an overview of the main developments on a particular topic, with an emphasis on recent developments, and sketch an outlook on future developments.

Submission Current Issue Archive Special Issues

The Structural and Magnetic Properties of Magnetite Nanoparticles Doped with Rare Earth Elements Dy and Sm

Published: 08-06-2026

https://doi.org/10.62476/apr82173

Abstract

We report a structural and magnetic study of Sm- and Dy-doped Fe₃O₄ nanoparticles synthesized by co-precipitation method. X-ray and neutron diffraction confirm that all samples retain a single-phase cubic spinel structure with rare earth ions incorporated into the lattice. Doping induces slight changes in lattice parameters and Fe–O bond lengths while preserving the normal spinel oxygen coordination. Magnetic refinements show that Sm³⁺ and Dy³⁺ stabilize the ferrimagnetic order and slightly enhance the ordered iron moments. SAXS measurements reveal nanoparticle sizes consistent with XRD data and indicate slight surface modifications and aggregation effects induced by doping. Overall, Sm and Dy dopants produce moderate structural changes but improve the magnetic behavior of Fe₃O₄ nanoparticles.