Nanoscale magnetic arrays through block copolymer templating of polyoxometalates

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dc.contributor.authorClyde, DRMen_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorGranville, Sen_AU
dc.contributor.authorWare, DCen_AU
dc.contributor.authorBrothers, PJen_AU
dc.contributor.authorMalmström, Jen_AU
dc.date.accessioned2024-03-01T00:45:26Zen_AU
dc.date.available2024-03-01T00:45:26Zen_AU
dc.date.issued2024-02-08en_AU
dc.date.statistics2024-03-01en_AU
dc.description.abstractMagnetic nanoarrays promise to enable new energy-efficient computations based on spintronics or magnonics. In this work, we present a block copolymer-assisted strategy for fabricating ordered magnetic nanostructures on silicon and permalloy substrates. Block copolymer micelle-like structures were used as a template in which polyoxometalate (POM) clusters could assemble in an opal-like structure. A combination of microscopy and scattering techniques was used to confirm the structural and organizational features of the fabricated materials. The magnetic properties of these materials were investigated by polarized neutron reflectometry, nuclear magnetic resonance, and magnetometry measurements. The data show that a magnetic structural design was achieved and that a thin layer of patterned POMs strongly influenced an underlying permalloy layer. This work demonstrates that the bottom-up pathway is a potentially viable method for patterning magnetic substrates on a sub-100 nm scale, toward the magnetic nanostructures needed for spintronic or magnonic crystal devices. © 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY-NC-ND 4.0.en_AU
dc.description.sponsorshipThe MacDiarmid Institute for Advanced Materials and Nanotechnology and the University of Auckland are acknowledged for their support of this research and for providing a doctoral scholarship for D.C., respectively. The authors acknowledge the support of Dr. Adrian Turner and Joe Vella for their valuable inputs on TEM and AFM microscopy, Prof. Duncan McGillivray for discussions of neutron scattering, and Dr. Seong Nam for training in POM synthesis. The authors acknowledge the support of the Australian Nuclear Science and Technology Organisation for providing beam facilities for Polarized Neutron Reflectometry (P9785).en_AU
dc.format.mediumPrint-Electronicen_AU
dc.identifier.citationClyde, D. R. M., Cortie, D. L., Granville, S., Ware, D. C., Brothers, P. J., & Malmström, J. (2024). Nanoscale magnetic arrays through block copolymer templating of polyoxometalates. Nano Letters, 24(7), 2165-2174. https://doi.org/10.1021/acs.nanolett.3c03825en_AU
dc.identifier.issn1530-6984en_AU
dc.identifier.issn1530-6992en_AU
dc.identifier.issue7en_AU
dc.identifier.journaltitleNano Lettersen_AU
dc.identifier.pagination2165-2174en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/acs.nanolett.3c03825en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15515en_AU
dc.identifier.volume24en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectCopolymersen_AU
dc.subjectScatteringen_AU
dc.subjectSpinen_AU
dc.subjectMaterialsen_AU
dc.subjectStorageen_AU
dc.subjectCapacityen_AU
dc.subjectMagnonsen_AU
dc.subjectCrystalsen_AU
dc.subjectThin Filmsen_AU
dc.titleNanoscale magnetic arrays through block copolymer templating of polyoxometalatesen_AU
dc.typeJournal Articleen_AU
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