Harnessing Magnetic Properties for Precision Thermal Control of Vortex Domain Walls in Constricted Nanowires.

ABSTRACT: This study investigates the thermal pinning and depinning behaviors of vortex domain walls (VWs) in constricted magnetic nanowires, focusing on the influence of intrinsic magnetic properties on VW stability under thermal stress. Using micromagnetic simulations, we analyze the roles of saturation magnetization (Ms), uniaxial magnetic anisotropy (Ku), and nanowire geometry in determining VW thermal stability. The modeled nanowire has dimensions of 200 nm (width), 30 nm (thickness), and a 50 nm constriction length, chosen based on the dependence of VW formation on nanowire geometry. Our results show that increasing Ms and K_u enhances VW pinning, while thermal fluctuations at higher temperatures promote VW depinning. We demonstrate that temperature and magnetic paramet

SUBMITTER: Al Bahri M 

PROVIDER: S-EPMC11901696 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature