In Situ TEM Characterization and Modulation for Phase Engineering of Nanomaterials

Y Han, L Wang, K Cao, J Zhou, Y Zhu, Y Hou… - Chemical …, 2023 - ACS Publications
Solid-state phase transformation is an intriguing phenomenon in crystalline or noncrystalline
solids due to the distinct physical and chemical properties that can be obtained and modified …

Ultrafast switching to zero field topological spin textures in ferrimagnetic TbFeCo films

K Zhu, L Bi, Y Zhang, D Zheng, D Yang, J Li, H Tian… - Nanoscale, 2024 - pubs.rsc.org
The capability of femtosecond (fs) laser pulses to manipulate topological spin textures on a
very short time scale is sparking considerable interest. This article presents the creation of …

Size and density control of skyrmions with picometer CoFeB thickness variations—observation of zero-field skyrmions and skyrmion merging

C Denker, S Nielsen, E Lage… - Journal of Physics D …, 2023 - iopscience.iop.org
The controlled formation and adjustment of size and density of magnetic skyrmions in
Ta/CoFeB/MgO trilayers with low Dzyaloshinskii–Moriya interaction is demonstrated. Close …

Current-induced nucleation and motion of skyrmions in zero magnetic field

S Mallick, S Panigrahy, G Pradhan, S Rohart - Physical Review Applied, 2022 - APS
We study the stabilization and electrical manipulation of skyrmions in magnetic ultrathin films
in the absence of an applied magnetic field. We show that this requires an increased …

Higher-order perpendicular magnetic anisotropy and interfacial damping of Co/Ni multilayers

A Rai, A Sapkota, A Pokhrel, M Li, M De Graef… - Physical Review B, 2020 - APS
We report on the experimental investigation of the perpendicular magnetic anisotropy in
Pt/[Co/Ni] N/Ir multilayers. Broadband ferromagnetic resonance (FMR) and polar angle …

Zero-field skyrmion, meron, and vortex crystals in centrosymmetric hexagonal magnets

S Hayami - Journal of Magnetism and Magnetic Materials, 2022 - Elsevier
We investigate the interaction conditions to stabilize topological spin textures in
centrosymmetric magnets without an external magnetic field. By performing the simulated …

[HTML][HTML] Magnetic domain wall substructures in Pt/Co/Ni/Ir multi-layers

M Li, A Rai, A Pokhrel, A Sapkota, C Mewes… - Journal of Applied …, 2021 - pubs.aip.org
We examine the substructures of magnetic domain walls (DWs) in [Pt/(Co/Ni) M/Ir] N multi-
layers using a combination of micromagnetic theory and Lorentz transmission electron …

Visibility and apparent size of néel-type magnetic skyrmions in fresnel defocus images of multilayer films

T Denneulin, J Caron, K Müller-Caspary… - Microscopy and …, 2021 - cambridge.org
Multilayers that comprise thin films of heavy metals and ferromagnets have been shown to
host Néel-type magnetic skyrmions at room temperature. Fresnel defocus imaging in Lorentz …

Current-induced nucleation and motion of zero field skyrmion

S Mallick, S Panigrahy, G Pradhan, S Rohart - arXiv preprint arXiv …, 2022 - arxiv.org
We study the stabilization and electrical manipulation of skyrmions in magnetic ultrathin films
in the absence of an applied magnetic field. We show that this requires an increased …

[HTML][HTML] Direct observation of topological charge impacting skyrmion bubble stability in Pt/Ni/Co asymmetric superlattices

N Pandey, M Li, M De Graef, V Sokalski - APL Materials, 2021 - pubs.aip.org
We characterize the magnetic properties and domain structure of Pt/Ni/Co asymmetric
superlattices in comparison to the more established Pt/Co/Ni structure. This reversal in …