Structural and magnetic properties of Pt/Co/Mn-based multilayers

Lonsky, Martin; Yoo, Myoung-Woo; Huang, Yi-Siou; Qian, Jiangchao; Zuo, Jian-Min; Hoffmann, Axel

doi:10.1103/physrevmaterials.6.054413

Structural and magnetic properties of Pt/Co/Mn-based multilayers

Journal Article · Tue May 31 00:00:00 EDT 2022 · Physical Review Materials

DOI:https://doi.org/10.1103/physrevmaterials.6.054413· OSTI ID:2283414

^[1]; Yoo, Myoung-Woo ^[2]; Huang, Yi-Siou ^[2]; Qian, Jiangchao ^[2]; Zuo, Jian-Min ^[2]; ^[2]

University of Illinois Urbana-Champaign, IL (United States); Goethe University Frankfurt (Germany); University of Illinois Urbana-Champaign
University of Illinois Urbana-Champaign, IL (United States)

Magnetic multilayers are a rich class of material systems with numerous highly tunable physical parameters that determine both their magnetic and electronic properties. Here, we present a comprehensive experimental study of the system Pt/Co/Mn, which extends the group of Pt / Co / X ( X = metal) multilayers that have been investigated thus far. We demonstrate that an increasing Co layer thickness changes the magnetic anisotropy from out of plane to in plane, whereas the deposition of thicker Mn layers leads to a decrease in the saturation magnetization. Temperature-dependent magnetometry measurements reinforce the hypothesis of antiferromagnetic coupling at the Co/Mn interfaces being responsible for the observed Mn thickness dependence of the magnetization reversal. Moreover, magneto-optical imaging experiments indicate systematic changes in magnetic domain patterns as a function of the Co and Mn layer thickness, suggesting the existence of bubblelike domains—potentially even magnetic skyrmions—in the case of sufficiently thick Mn layers, which are expected to contribute to a sizable Dzyaloshinskii-Moriya interaction in the multilayer stacks. As a result, we identify Pt/Co/Mn as a highly complex multilayer system with strong potential for further fundamental studies and possible applications.

View Accepted Manuscript (DOE)

Research Organization:: University of Illinois Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

Grant/Contract Number:: SC0022060

OSTI ID:: 2283414

Journal Information:: Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 5 Vol. 6; ISSN 2475-9953

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Magnetic multilayers
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Structural and magnetic properties of Pt/Co/Mn-based multilayers

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