The influence of an applied magnetic field on the clusters formed by Stockmayer supracolloidal magnetic polymers

•Stockmayer supramolecular polymer-like structures (SMPs) are studied under an applied field.•Magnetic susceptibility is the highest for clusters formed by Y- and X-shaped SMPs.•Clusters formed by chain-like SMPs exhibit the largest in-field elongation. Using Molecular Dynamics computer simulations, we study how an applied magnetic field influences the shape, integrity and internal structure of clusters formed by Stockmayer supracolloidal magnetic polymers (SMPs). We consider SMPs of four different topologies: chain-, Y-, X- and ring-like ones. We find that the highest macroscopic deformation and the strongest monomer rearrangements from a liquid to a local hexatic order is observed for clusters formed by chain-like SMPs. The highest magnetic susceptibility, however, is exhibited by the clusters composed of Y- and X-like SMPs. Clusters formed by ring-like SMPs are basically not affected by the field strengths considered here. It is worth mentioning that those fields are sufficient to cause the dissociation of the clusters formed by other topologies of SMPs.