Effect of Cobalt Addition on Magnetism, Half Metallic and Optical Properties of Fe 2 MnAl Heusler Alloy

Effect of Cobalt Addition on Magnetism, Half Metallic and Optical Properties of Fe 2 MnAl Heusler Alloy | 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 Effect of Cobalt Addition on Magnetism, Half Metallic and Optical Properties of Fe 2 MnAl Heusler Alloy Ashok Yadav, Vivek Kumar Jain This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7321135/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 In this study on Fe 2-x Co x MnAl Heusler alloys, we analysed several key properties, including the electronic energy band gap, half-metallicity, magnetic moment and spin polarization (SP). These properties were studied to understand the half-metallic stability as the lattice parameter changed. The alloys consistently maintained the total magnetic moments (M Total ) predicted by the Slater-Pauling rule (SPR), with values of 2.0 μ B for x = 0.0, 2.5 μ B for x= 0.5, 3.0 μ B for x= 1.0, 3.5 μ B for x=1.5, and 4.0 μ B for x= 2.0, across a wide range of lattice variations with 100% value of SP and half-metallic ferromagnetic (HMF) behavior within specific lattice ranges for x = 0.5, this behavior was observed between 5.40-5.70 Å, for x = 1.0, it was seen between 5.35-5.55 Å, for x = 1.5, the range was 5.30-5.60 Å, for x = 2.0, it occurred between 5.25-5.55 Å. Their ability to maintain a stable half-metallic character over a broad spectrum of lattice parameters also makes them strong candidates for applications in spintronics based devices. Optical characteristics of the Fe 2- x Co x MnAl ( x =0 to 2) alloys are investigated in terms of optical Reflectivity R(ω), optical conductivity σ(ω), Energy loss L(ω), Absorption coefficient I(ω), real and imaginary parts of the dielectric function (i.e. ε 1 (ω) and ε 2 (ω) respectively), refractive index n(ω) and extinction coefficient K(ω) provided these materials for applicable in making solar cells and optical switches. Heusler alloy Density of states Spintronics Half-metallic ferromagnetism Magnetic moment Optical Properties 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. 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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-7321135","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":498907916,"identity":"52fea7f7-2cf5-4c0d-8851-48fc03e8ecc1","order_by":0,"name":"Ashok Yadav","email":"","orcid":"","institution":"Career Point University","correspondingAuthor":false,"prefix":"","firstName":"Ashok","middleName":"","lastName":"Yadav","suffix":""},{"id":498907918,"identity":"43d87e05-c62a-4e9a-adee-42b6950e2044","order_by":1,"name":"Vivek Kumar Jain","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABAElEQVRIiWNgGAWjYDACZgYGxgYGNiBkbHzwoQIkwtxArBbmZsMZZ0AijAS0MIC1gAB7mzRvGxIfFzA4zmP4cAYDnzyfdGODNO+82mj+dqCWHxXbcGs5zGNsuIGBzbBN5mCD4dxtx3NnHGZsYOw5cxunFslmtjTJBwxsjG0SiQ0Jb7cdy20AamFmbMOrJf0nUIs9SMsB3jnHcucT0sLPzHyMEeiwRKCWxkbehprcDURoOSw5w4AtGailmXHGsQO5G4FaDuLzCxv/wcaPPRXHbOfPSH/+40NNXe6884cPPvhRgVsLBBgcg7EOg8kDBNSDQA2MUUeE4lEwCkbBKBhpAABbrlkf9v3HKgAAAABJRU5ErkJggg==","orcid":"","institution":"Career Point University","correspondingAuthor":true,"prefix":"","firstName":"Vivek","middleName":"Kumar","lastName":"Jain","suffix":""}],"badges":[],"createdAt":"2025-08-07 17:53:06","currentVersionCode":1,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-7321135/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7321135/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":94466834,"identity":"92c15e82-5673-4333-a600-5d7e31a747a4","added_by":"auto","created_at":"2025-10-27 15:21:15","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2970197,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7321135/v1_covered_c7060625-760a-4bd9-85c8-9443ce4cf221.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Effect of Cobalt Addition on Magnetism, Half Metallic and Optical Properties of Fe 2 MnAl Heusler Alloy","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Heusler alloy, Density of states, Spintronics, Half-metallic ferromagnetism, Magnetic moment, Optical Properties","lastPublishedDoi":"10.21203/rs.3.rs-7321135/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7321135/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn this study on Fe\u003csub\u003e2-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eMnAl Heusler alloys, we analysed several key properties, including the electronic energy band gap, half-metallicity, magnetic moment and spin polarization (SP). These properties were studied to understand the half-metallic stability as the lattice parameter changed. The alloys consistently maintained the total magnetic moments (M\u003csub\u003eTotal\u003c/sub\u003e) predicted by the Slater-Pauling rule (SPR), with values of 2.0 μ\u003csub\u003eB \u0026nbsp;\u003c/sub\u003efor x = 0.0, \u0026nbsp;2.5 μ\u003csub\u003eB \u003c/sub\u003efor x= 0.5, 3.0 μ\u003csub\u003eB \u003c/sub\u003efor x= 1.0, 3.5 μ\u003csub\u003eB \u003c/sub\u003efor x=1.5, and 4.0 μ\u003csub\u003eB \u003c/sub\u003efor x= 2.0, across a wide range of lattice variations with 100% value of SP and half-metallic ferromagnetic (HMF) behavior within specific lattice ranges for x = 0.5, this behavior was observed between 5.40-5.70 Å, for x = 1.0, it was seen between 5.35-5.55 Å, for x = 1.5, the range was 5.30-5.60 Å, for x = 2.0, it occurred between 5.25-5.55 Å. Their ability to maintain a stable half-metallic character over a broad spectrum of lattice parameters also makes them strong candidates for applications in spintronics based devices.\u0026nbsp; Optical characteristics of the Fe\u003csub\u003e2-\u003c/sub\u003e\u003csub\u003e\u003cem\u003ex\u003c/em\u003e\u003c/sub\u003eCo\u003csub\u003e\u003cem\u003ex\u003c/em\u003e\u003c/sub\u003eMnAl (\u003cem\u003ex\u003c/em\u003e=0 to 2) alloys are investigated in terms of optical Reflectivity R(ω), optical conductivity σ(ω), Energy loss L(ω), Absorption coefficient I(ω), real and imaginary parts of the dielectric function (i.e. ε\u003csub\u003e1\u003c/sub\u003e(ω) and ε\u003csub\u003e2\u003c/sub\u003e(ω) respectively), refractive index n(ω) and extinction coefficient K(ω) provided these materials for applicable in making solar cells and optical switches.\u003c/p\u003e","manuscriptTitle":"Effect of Cobalt Addition on Magnetism, Half Metallic and Optical Properties of Fe 2 MnAl Heusler Alloy","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-08-12 13:31:00","doi":"10.21203/rs.3.rs-7321135/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"e5463ffd-3887-410e-bc74-9642ccb455ef","owner":[],"postedDate":"August 12th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-10-27T13:29:26+00:00","versionOfRecord":[],"versionCreatedAt":"2025-08-12 13:31:00","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7321135","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7321135","identity":"rs-7321135","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}