Magnetic APFC modeling and the influence of magnetostructural interactions on grain shrinkage
Abstract
We derive the amplitude expansion for a phasefieldcrystal (APFC) model that captures the basic physics of magnetostructural interactions. The symmetry breaking due to magnetization is demonstrated, and the characterization of the magnetic anisotropy for a bcc crystal is provided. This model enables a convenient coarsegrained description of crystalline structures, in particular when considering the features of the APFC model combined with numerical methods featuring inhomogeneous spatial resolution. This is shown by addressing the shrinkage of a spherical grain within a matrix, chosen as a prototypical system to demonstrate the influence of different magnetizations. These simulations serve as a proof of concept for the modeling of manipulation of dislocation networks and microstructures in ferromagnetic materials within the APFC model.
 Publication:

Modelling Simul. Mater. Sci. Eng.
 Pub Date:
 September 2022
 DOI:
 10.1088/1361651X/ac773a
 arXiv:
 arXiv:2202.06654
 Bibcode:
 2022MSMSE..30f4003B
 Keywords:

 magnetostructural properties;
 APFC modeling;
 multiscale adaptive finite elements;
 Condensed Matter  Materials Science;
 Condensed Matter  Mesoscale and Nanoscale Physics;
 Physics  Computational Physics;
 I.6.3;
 I.6.5
 EPrint:
 17 pages, 9 figures