Dynamic magnetic response of multicore particles: The role of grain magnetic anisotropy and intergrain interactions

Autor(en)

Elena S. Pyanzina, Ekaterina V. Novak, Andrey A. Kuznetsov, Sofia S. Kantorovich

Abstrakt

This study examines the magnetic properties of multicore magnetic nanoparticles (MMNPs) using Brownian dynamics simulations in conjunction with the Landau-Lifshitz-Gilbert equation. We demonstrate that the magnetic responses of MMNPs, both static and dynamic, are governed by a complex interplay between the cores magnetic anisotropy and the strength of intercore magnetic interactions. We show that for a single multicore in a liquid carrier, the distribution of the anisotropy axes inside does not impact its initial magnetic response. These insights are crucial for refining the design of multicore magnetic particles in various applications, including magnetic hyperthermia, data storage, and targeted drug delivery, where accurate control over magnetic characteristics is vital.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

Ural Federal University

Journal

Journal of Molecular Liquids

Band

421

Anzahl der Seiten

11

ISSN

0167-7322

DOI

https://doi.org/10.1016/j.molliq.2024.126842

Publikationsdatum

03-2025

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie, 103029 Statistische Physik

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Spectroscopy, Physical and Theoretical Chemistry, Materials Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/988162d5-df66-4c64-889e-ed2e77fde3ce