Seminaria

Dnia 2026-05-19 o godzinie 13:15 w sali 2011 Wydziału Fizyki UwB, odbędzie się seminarium na którym mgr Kinga Anna Szarkowska z Department of Condensed Matter Physics; Doctoral School of the University of Bialystok wygłosi wykład pt

Structural and magnetic properties of rare-earth doped magnetite nanoparticles

Serdecznie zapraszamy

Tomasz Karpiuk

Andrzej Maziewski

Structural and magnetic properties of rare-earth doped magnetite nanoparticles

mgr Kinga Anna Szarkowska

Doctoral School of the University of Bialystok

Magnetite (Fe3O4) nanoparticles doped with rare-earth elements (REE) provide a versatile platform for investigating the interplay between structural lattice distortions and magnetic properties. Due to their chemical stability and magnetic tunability, these materials are promising candidates for environmental applications, specifically for the magnetic separation of water pollutants. This presentation will first discuss the results of my master’s research, which involved the synthesis and characterization of eight REE-doped magnetite samples (La, Pr, Tb, and Gd) via chemical co-precipitation. I will analyze how varying dopant concentrations influence the crystal lattice and saturation magnetization. Although these materials were initially intended as nanophosphors, the absence of luminescence redirected the research focus toward their structural integrity and magnetic performance, providing insights into the limits of lanthanide integration into the Fe3O4 host. In the second part, I will introduce my current doctoral project, which builds upon these previous findings. To address the limitations of co-precipitation, particularly the requirement for a higher specific surface area for efficient adsorption, I have transitioned to a sol-gel synthesis route. I will present preliminary results on the production of highly porous magnetite nanoparticles. The talk will conclude by outlining a vision for these engineered nanoparticles as efficient, magnetically recoverable agents for advanced water purification.