Investigation of transverse exchange-springs in electrodeposited nano-heterostructured films through first-order reversal curve analysis

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dc.contributor.authorSamanta, Arindamen
dc.contributor.authorRoy, Saibalen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderNational Science Foundationen
dc.date.accessioned2024-12-05T14:57:17Z
dc.date.available2024-12-05T14:57:17Z
dc.date.issued2024-09-19en
dc.description.abstractThe prerequisite of efficient exchange-spring nano-heterostructures, i.e., tuning both hard and soft phases at a nanometer level, has posed significant preparation challenges to ensure effective exchange-coupling. Here, we present a novel approach to fabricate transverse exchange-spring nano-heterostructures using single starting material through an “in situ” electrodeposition technique at room temperature. Utilizing modified acidic bath chemistry and controlled hydrogen evolution, we successfully prepared stress-free, shiny, fine-grained amorphous, and nanocrystalline Co-rich cobalt phosphorus films. These nano-heterostructured films exhibit a unique non-collinear anisotropy-driven transverse exchange-spring behavior, investigated systematically under ambient conditions. The comprehensive functional analyses reveal that intricate interplay between in-plane (IP) anisotropy of amorphous phase and out-of-plane (OOP) anisotropy generating from a nanocrystalline structure compete with each other, while producing characteristic stripe domain structures to novel corrugated stripe domain shapes. The angle-dependent first-order reversal curve distributions demonstrate new insights into the magnetic reversal mechanisms, further confirming the non-exchange-spring and exchange-spring nature of the films depending on the prevalent interfacial exchange coupling. Formation of anisotropy-driven metastable-state due to competition between IP and OOP anisotropy at a particular OOP orientation has led the normal exchange-spring structures to a transverse exchange-spring structure. Micromagnetic simulations, in excellent agreement with experimental data, further elucidate the formation of characteristic stripe domain patterns and the influence of anisotropy on the magnetic properties. The innovative methodology and detailed functional analysis presented here offer significant understanding to the field of exchange-spring magnetic materials, including anisotropy-driven metastable states, demonstrating the potential for scalable and cost-effective fabrication of advanced nano-heterostructures with tailored magnetic properties.en
dc.description.sponsorshipScience Foundation Ireland (NSF-SFI-DFE within the tripartite US-Ireland program (Irish Project Grant ID: SFI-22/US/3852-nano-antenna))en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid091118en
dc.identifier.citationSamanta, A., Roy, S. (2024) 'Investigation of transverse exchange-springs in electrodeposited nano-heterostructured films through first-order reversal curve analysis', APL Materials, 12(9), 091118 (13pp). https://doi.org/10.1063/5.0223485en
dc.identifier.doihttps://doi.org/10.1063/5.0223485en
dc.identifier.endpage13en
dc.identifier.issn2166-532Xen
dc.identifier.issued9en
dc.identifier.journaltitleAPL Materialsen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/16713
dc.identifier.volume12en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.ispartofAPL Materialsen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Frontiers for the Future::Awards/21/FFP-A/10003/IE/“High Efficiency, Novel Nonlinear Wideband, M/NEMS Electromagnetic Vibrational Generators for Powering Internet of Things – MERIT”/en
dc.rights© 2024, the Authors. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectExchange interactionsen
dc.subjectMagnetic orderingen
dc.subjectHeterostructuresen
dc.subjectElectrodepositionen
dc.subjectAmorphous materialsen
dc.subjectMagnetic hysteresisen
dc.subjectMagnetic materialsen
dc.subjectThin filmsen
dc.subjectNanomaterialsen
dc.subjectElectrochemistryen
dc.titleInvestigation of transverse exchange-springs in electrodeposited nano-heterostructured films through first-order reversal curve analysisen
dc.typeArticle (peer-reviewed)en
oaire.citation.issue9en
oaire.citation.volume12en
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