Negative Magnetoresistance In rGO-Enhanced PVA Nanocomposite Films At Room Temperature

Negative Magnetoresistance In rGO-Enhanced PVA Nanocomposite Films At Room Temperature | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Negative Magnetoresistance In rGO-Enhanced PVA Nanocomposite Films At Room Temperature Vikas Kumawat, Somnath Biswas, Balram Tripathi, Sudhanshu Dwivedi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9475596/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Hysteretic negative magnetoresistance (MR) has been observed in rGO-enhanced poly -vinyl alcohol (PVA) nanocomposite films (RGCP-1) having a value of -30% at room temperature. The rGO-enhanced PVA nanocomposite films reinforced with chromium oxides nanophase composite particles (RGCP-2) had a meagre non-hysteretic MR of -0.8% at room temperature. Manifestation of hysteretic negative MR at room temperature confirms the memory effect and the suitability of RGCP-1 films for spin-memory and spin-logic operations. Defects in graphene introduce magnetic moments that get aligned under the applied magnetic field. Apart from this, specific nature of interfacial bonding of thin rGO flakes and polymer is the major factor for the appearance of MR in RGCP-1 nanocomposite films. This shows that the reinforcement with nanophase composite particles in RGCP-2 film breaks the specific ordering of the localized states of rGO and polymer molecules in a typical percolation network in the nanocomposite films resulting in a highly diminished non-hysteretic MR. Both RGCP-1 & RGCP-2 film samples were subjected to X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy for structural and morphological characterizations. Both the film samples were subjected to electrical and magnetoresistive characterizations to draw information about the associated features for a suitable application. rGO graphene magnetoresistance in graphene defects in graphene hopping Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9475596","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":627505590,"identity":"efd329cd-cf2d-426d-aa2a-55514851f5a2","order_by":0,"name":"Vikas Kumawat","email":"","orcid":"","institution":"S.S. Jain Subodh P.G. 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The rGO-enhanced PVA nanocomposite films reinforced with chromium oxides nanophase composite particles (RGCP-2) had a meagre non-hysteretic MR of -0.8% at room temperature. Manifestation of hysteretic negative MR at room temperature confirms the memory effect and the suitability of RGCP-1 films for spin-memory and spin-logic operations. Defects in graphene introduce magnetic moments that get aligned under the applied magnetic field. Apart from this, specific nature of interfacial bonding of thin rGO flakes and polymer is the major factor for the appearance of MR in RGCP-1 nanocomposite films. This shows that the reinforcement with nanophase composite particles in RGCP-2 film breaks the specific ordering of the localized states of rGO and polymer molecules in a typical percolation network in the nanocomposite films resulting in a highly diminished non-hysteretic MR. 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