Observation of Topological Spin Textures in Ferrimagnetic Mn2 − xZnxSb

Li, Yue; Nabi, Md Rafique Un; Park, Hyowon; Liu, Yuzi; Rosenkranz, Stephan; Petford‐Long, Amanda K.; Hu, Jin; Velthuis, Suzanne G.E. te; Phatak, Charudatta

doi:10.1002/smll.202406299

Observation of Topological Spin Textures in Ferrimagnetic Mn_{2 − x}Zn_xSb

Journal Article · Thu Mar 20 00:00:00 EDT 2025 · Small

DOI:https://doi.org/10.1002/smll.202406299· OSTI ID:2533581

^[1]; ^[2]; Park, Hyowon ^[3]; Liu, Yuzi ^[4]; ^[1]; ^[5]; Hu, Jin ^[2]; Velthuis, Suzanne G.E. te ^[1]; ^[5]

Argonne National Laboratory (ANL), Argonne, IL (United States)
Univ. of Arkansas, Fayetteville, AR (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM)
Argonne National Laboratory (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)

Ferrimagnets, which have both ferromagnetic and antiferromagnetic coupling, are attracting increased attention in the realm of spintronic devices due to advantages such as ultrafast dynamics and a suppressed skyrmion Hall effect. Thus, understanding the behavior of nontrivial spin textures in ferrimagnets is crucial; however, comprehensive reports on this topic remain limited. Here, the magnetic spin textures of ferrimagnetic Mn_{2 − x}Zn_xSb (x = 0.85) is explored as a function of temperature and applied magnetic field. The spin textures can be tuned to a variety of states, including stripes, skyrmion bags, and a skyrmion lattice. Chiral Néel-type magnetic structures are visualized using Lorentz transmission electron microscopy. Mn(I) ions are slightly shifted toward the Sb sites, which may be due to a strong electrostatic interaction between Mn and Sb ions. This local structural distortion breaks the inversion symmetry and introduces an effective Dzyaloshinkii–Moriya interaction. This work thus provides a pathway to use doping and heterogeneity in a ferrimagnet to control and generate chiral nontrivial spin textures.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 2533581

Alternate ID(s):: OSTI ID: 2589530

Journal Information:: Small, Journal Name: Small Journal Issue: 17 Vol. 21; ISSN 1613-6810; ISSN 1613-6829

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Observation of Topological Spin Textures in Ferrimagnetic Mn_{2 − x}Zn_xSb