Magnetoelastic fingerprints of metamagnetism in FeRh

Magnetoelastic fingerprints of metamagnetism in FeRh | 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 Article Magnetoelastic fingerprints of metamagnetism in FeRh Pablo Nieves, Sergiu Arapan, Kenny Padrón-Alemán, Ievgeniia Korniienko, and 5 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8853701/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version Abstract Recently, there has been renewed interest in the magnetism of FeRh that extends well beyond the extensively studied, yet not fully understood, antiferromagnetic–ferromagnetic transition. Despite its popularity, fundamental magnetic properties—including magnetocrystalline anisotropy and magnetoelasticity—remain insufficiently characterized from both theoretical and experimental studies. In this work, we first used Density Functional Theory to analyze these properties in single crystal FeRh for both antiferromagnetic and ferromagnetic phases at zero temperature, revealing significant qualitative and quantitative differences between them. We then attempted to develop a magnetic interatomic potential for a classical spin-lattice model, coupling spin dynamics and molecular dynamics, that reproduces the magnetoelastic phenomenology obtained from first principles calculations. Our results constitute a step towards a better understanding of the complex magnetoelasticity of FeRh and open the door to more accurate large-scale atomistic modeling of similar materials undergoing antiferromagnetic-ferromagnetic first-order phase transitions. Physical sciences/Materials science/Theory and computation/Atomistic models Physical sciences/Materials science/Condensed-matter physics/Magnetic properties and materials Physical sciences/Materials science/Theory and computation/Electronic structure Density Functional Theory magnetoelasticity spin-lattice model Full Text Additional Declarations There is NO Competing Interest. Cite Share Download PDF Status: Under Review 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. 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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-8853701","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":592286394,"identity":"a628e813-ac8d-4aff-af77-1d6260f1fb43","order_by":0,"name":"Pablo 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