Influence of magnetic domain walls on all-optical magnetic toggle switching in a ferrimagnetic GdFe film.

ABSTRACT: We present a microscopic magnetic domain imaging study of single-shot all-optical magnetic toggle switching of a ferrimagnetic Gd₂₆Fe₇₄ film with out-of-plane easy axis of magnetization by X-ray magnetic circular dichroism photoelectron emission microscopy. Individual linearly polarized laser pulses of 800 nm wavelength and 100 fs duration above a certain threshold fluence reverse the sample magnetization, independent of the magnetization direction, the so-called toggle switching. Local deviations from this deterministic behavior close to magnetic domain walls are studied in detail. Reasons for nondeterministic toggle switching are related to extrinsic effects, caused by pulse-to-pulse variations of the exciting laser system, and to intrinsic effects related to the ma

SUBMITTER: Hosseinifar R 

PROVIDER: S-EPMC8787351 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature