Accurate finite-difference micromagnetics of magnets including RKKY interaction: Analytical solution and comparison to standard micromagnetic codes

Article Materials Science, Multidisciplinary

Proposal for a micromagnetic standard problem: Domain wall pinning at phase boundaries

Paul Heistracher et al.

Summary: In this paper, we propose a novel micromagnetic standard problem for calculating the coercive field required to unpin a domain wall at the interface of a multiphase magnet. This problem is sensitive to discontinuities in material parameters such as the exchange interaction, uniaxial anisotropy, and spontaneous magnetization. We derive an explicit treatment of the jump conditions at material interfaces for the exchange interaction in the finite-difference discretization. The micromagnetic simulation results are compared with analytical solutions, showing good agreement. The proposed standard problem is suitable for testing the implementation of both finite-difference and finite-element simulation codes.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2022)

添加到收藏夹

Article Materials Science, Multidisciplinary

Magnetization dynamics in synthetic ferromagnetic thin films

H. J. Waring et al.

Summary: Researchers have found that synthetic ferromagnets have a unique layer structure, where the dynamic response of the ferromagnetic layers is closely related to the difference in magnetization and interlayer coupling. Experimental results demonstrate that conventional acoustic and optical descriptions do not fully capture the complexities of synthetic ferromagnets' dynamics.

PHYSICAL REVIEW B (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary