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dc.contributor.authorMa, Mangyuanen_US
dc.contributor.authorAng, Calvin Ching Ianen_US
dc.contributor.authorLi, Yongen_US
dc.contributor.authorPan, Zizhaoen_US
dc.contributor.authorGan, Weiliangen_US
dc.contributor.authorLew, Wen Siangen_US
dc.contributor.authorMa, Fushengen_US
dc.identifier.citationMa, M., Ang, C. C. I., Li, Y., Pan, Z., Gan, W., Lew, W. S., & Ma, F. (2020). Enhancement of zero-field skyrmion density in [Pt/Co/FE/Ir]2 multilayers at room temperature by the first-order reversal curve. Journal of Applied Physics, 127(22), 223901-. doi:10.1063/5.0004432en_US
dc.description.abstractMagnetic skyrmions are novel topological spin textures on the nanoscale, and significant efforts have been taken to improve their zero-field density at room temperature (RT). In this work, we reported an approach of improving zero-field skyrmion density in [Pt/Co/Fe/Ir]2 multilayers at RT by using the first-order reversal curve (FORC) technique to obtain information on the irreversible or reversible behaviors in the magnetization switching process. It was found from the FORC diagram that the magnetization reversal mechanism can be characterized into three stages: (1) reversible labyrinth stripe domains expanding or shrinking stage; (2) irreversible stripe domains fracturing stage; and (3) irreversible skyrmion annihilation stage. Furthermore, the zero-field skyrmion density can be highly improved by choosing reversal fields from the irreversible stripe domains fracturing stage. The highest skyrmion density was approached according to the maximum FORC distribution ρ. Our results have established the FORC measurement as a valuable tool for investigating magnetic multilayers of high skyrmion densities.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofJournal of Applied Physicsen_US
dc.rights© 2020 The Author(s). All rights reserved. This paper was published by AIP Publishing in Journal of Applied Physics and is made available with permission of The Author(s).en_US
dc.titleEnhancement of zero-field skyrmion density in [Pt/Co/Fe/Ir]2 multilayers at room temperature by the first-order reversal curveen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsFirst-order Reversal Curvesen_US
dc.subject.keywordsMagnetic Particle-systemsen_US
dc.description.acknowledgementWork performed at the Nanjing Normal University was supported by the National Natural Science Foundation of China (NNSFC; Grant No. 11704191), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20171026), the Jiangsu Specially-Appointed Professor, and the Six-Talent Peaks Project in Jiangsu Province of China (Grant No. XYDXX-038). Work performed at the Nanyang Technological University was supported by a NRF-CRP Grant (No. CRP9-2011-01), a RIE2020 ASTAR AME IAF-ICP Grant (No. I1801E0030), and an ASTAR AME Programmatic Grant (No. A1687b0033). W.S.L is a member of the SG-SPIN Consortium.en_US
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