Role of ionic surfactant in magnetic dynamics of self-assembled dispersions of nanoplatelets

Autor(en)

Hajnalka Nádasi, Melvin Küster, Alenka Mertelj, Nerea Sebastián, Patricija Hribar Boštjančič, Darja Lisjak, Thilo Viereck, Margaret Rosenberg, Alexey O. Ivanov, Sofia S. Kantorovich, Alexey Eremin, Frank Ludwig

Abstrakt

In complex colloidal systems, interparticle interactions strongly affect the dynamics of the constituting particles. A study of the dynamical response also provides invaluable information on the character of those interactions. Here we demonstrate how tuning the electrostatic interactions by an ionic surfactant in dispersions of magnetic nanoplatelets leads to developing new dynamic modes in magnetic response spectra. The collective modes can be induced or suppressed by either varying the concentration ratio of the magnetic nanoplatelets (MP) to the surfactant or increasing the MP concentration reflecting the nanoscale characteristics of this fluid magnet.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie, Forschungsplattform MMM Mathematics-Magnetism-Materials

Externe Organisation(en)

Otto-von-Guericke-Universität Magdeburg, Technische Universität Carolo-Wilhelmina zu Braunschweig, Jožef Stefan Institute (IJS), Ural Federal University, Russian Academy of Sciences

Journal

Journal of Molecular Liquids

Band

382

Anzahl der Seiten

9

ISSN

0167-7322

DOI

https://doi.org/10.1016/j.molliq.2023.121900

Publikationsdatum

07-2023

Peer-reviewed

Ja

ÖFOS 2012

103017 Magnetismus, 103043 Computational Physics, 103015 Kondensierte Materie

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/793fcd7a-acad-46be-9fa5-46a47e98a269