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Alternative title: 交番磁気力顕微鏡で評価されたMn4Nエピタキシャル薄膜の非共面磁気構造

Description:

Noncoplanar magnetic structures in the Mn4N epitaxial thin films grown on the 001-oriented MgO and SrTiO3 (STO) substrates were studied, based on the measurements of topological Hall effect (THE) and the observation of magnetic domain nucleation. The typical nucleation diameter of domain was determined using an alternating magnetic force microscope, which proved advantageous for the visualization of the domain with an out-of-plane magnetic component. The nucleation diameter of the domains on the MgO substrate were ~150 nm for the thickness of 30 nm and ~110 nm for 10 nm, while ~130 nm for 30 nm on the STO substrate. The value of THE was one or two orders of magnitude larger than that estimated based on the nucleation diameter, indicating that the existence of a noncoplanar magnetic structure is the primary factor contributing to the THE in the Mn4N films, comparing to the effect from domain nucleation. The noncoplanar magnetic structure was more pronounced with decreasing thickness and substrate-induced strain.

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• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

  This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms of the licence are adhered to.

Keyword: Mn4N, MFM, Magnetic domain, Non-collinear, Non-coplanar

Date published: 2025-02-10

Publisher: Institute of Physics Publishing

Journal:

• JOURNAL OF PHYSICS D-APPLIED PHYSICS (ISSN: 00223727) vol. 58 issue. 6 65002

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5065

First published URL: https://doi.org/10.1088/1361-6463/ad9285

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Updated at: 2025-11-27 08:30:07 +0900

Published on MDR: 2025-11-27 08:24:00 +0900