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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Poster Session III

CPP 50.8: Poster

Dienstag, 17. März 2020, 14:00–16:00, P1C

Magnetic properties of Stcokmayer supracolloidal magnetic polymers — •Vladimir Zverev¹, Ivan Novikau², Pedro Sanchez^1,2, and Ekaterina Novak¹ — ¹URFU, Ekaterinburg, Russia — ²UNIVIE, Vienna, Austria

This work is devoted to magnetic properties of aggregates formed in suspensions of supracolloidal magnetic polymer-like structures of different topology. We find that due to the formation of compact clusters, the overall initial magnetic susceptibility decreases dramatically for chain-, Y- and X-like topologies. However, this decrease for chain-like supracolloidal magnetic polymers is much stronger than that of other topologies, especially for systems with strong magnetic interactions [1]. If an external field is applied, clusters deform as a result of complex interplay between four forces: external filed tends to align each dipole, the dipole-dipole interaction between magnetic particles tend to prevent rotations, permanent crosslinking prevent translation and finally central attraction favours the overall spherical shape of the cluster. Range of parameters when clusters remain stable and do not disintegrate is identified.

[1] E. Novak et al, JMMM 497, 166025 (2020).