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dc.contributor.authorAng, Calvin Ching Ianen_US
dc.contributor.authorGan, Weiliangen_US
dc.contributor.authorWong, Grayson Dao Hweeen_US
dc.contributor.authorLew, Wen Siangen_US
dc.identifier.citationAng, C. C. I., Gan, W., Wong, G. D. H. & Lew, W. S. (2021). Temperature-modulated magnetic skyrmion phases and transformations analysis from first-order reversal curve study. Physical Review B, 103(14), 144409-.
dc.description.abstractWe performed a temperature-modulated first-order reversal curve (FORC) study on a Pt/Co/Fe/Ir magnetic stack that exhibited a magnetic phase transition from isolated skyrmions to skyrmion lattice with increasing temperature. Using in situ magneto-optical Kerr imaging, a generalized description of domain transformations associated with the FORC distribution peaks at both their reversal and sweeping field are derived to allow for direct analysis from the FORC diagram. The sweeping field of the peak, which is commonly ignored in analysis, is identified as the process of domain propagation or nucleation towards terminal domain separation. This process is found to be essential in inducing magnetization irreversibility to reveal domain transformations. In addition, a model characterized by the FORC distribution peaks was developed to describe the transition from the isolated skyrmion to skyrmion lattice phase as well as to identify important field ranges for the transformations. This study establishes an intuitive form of analysis for the otherwise abstract data of FORC distribution for the characterization of magnetic skyrmions in the active field of skyrmionics.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relationNRF2015- IIP001-001en_US
dc.relation.ispartofPhysical Review Ben_US
dc.rights© 2021 American Physical Society (APS). All rights reserved. This paper was published in Physical Review B and is made available with permission of American Physical Society (APS).en_US
dc.titleTemperature-modulated magnetic skyrmion phases and transformations analysis from first-order reversal curve studyen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsMagnetic Phase Transitionsen_US
dc.subject.keywordsMagnetic Textureen_US
dc.description.acknowledgementThis work was supported by the Singapore National Research Foundation, Prime Minister's Office under a Competitive Research Programme (Non-volatile Magnetic Logic and Memory Integrated Circuit Devices, NRF-CRP9-2011- 01), and an Industry-IHL Partnership Program (NRF2015- IIP001-001). The support from a RIE2020 ASTAR AME IAF-ICP Grant (No. I1801E0030) is also acknowledged.en_US
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