Tailoring the Effect of La3+ Substitution on Structural, Magnetic and Optical Properties of Ba0.7Co0.3LaxFe2-xO4

Tailoring the Effect of La3+ Substitution on Structural, Magnetic and Optical Properties of Ba0.7Co0.3LaxFe2-xO4 | 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 Tailoring the Effect of La 3+ Substitution on Structural, Magnetic and Optical Properties of Ba 0.7 Co 0.3 La x Fe 2-x O 4 Muhammad Asif, Rehan Saeed, M. A. K. Yousaf Shah, Usman Ahmad, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4834124/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 13 You are reading this latest preprint version Abstract Ba0.7Co0.3LaxFe2-xO4 nano spinel ferrites, with lanthanum substitution, were synthesized using the sol-gel auto-combustion technique. Various techniques, including Crystallographic X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), high-resolution scanning electron microscopy (HRSEM), vibrating sample magnetometer (VSM), and UV-vis spectroscopy, were used to study their structural, morphological, magnetic, and optical parameters. The XRD patterns indicated the formation of a single-phase nanocrystalline structure, with an increase in lattice constant due to Lanthanum substitution. FTIR spectrum confirmed the presence of the M-O stretching band and facilitated a study of functional groups. HRSEM images exhibited the formation of uniform, cubic, spherical nanoparticles with gentle agglomerations. The VSM study highlighted alterations in saturation magnetizationM S , remanenceM R , coercivityH C , and Y-K angles, indicative of the impact of La3+ ions. UV-visible spectroscopy determined an increase in the bandgapE g , suggesting potential applications of synthesized nano-ferrites in various fields like optoelectronics and non-linear optical filter devices. Structural parameters, such as X-ray density, dislocation density, X-ray morphology index, distortion parameter, and interchange distance, were also measured based on the XRD data. These lower E g , H C , and M r values suggest potential applications of synthesized nano-ferrites in optical domains, photo-catalysis water splitting, optoelectronics, and non-linear optical filter devices. Sol-Gel auto combustion method crystallographic X-ray diffraction Fourier Transform Infrared Spectroscopy Scanning electron Microscopy Vibrating Sample Magnetometer UV-Vis spectroscopy refractive index and polarizability Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 15 Aug, 2024 Reviews received at journal 13 Aug, 2024 Reviews received at journal 09 Aug, 2024 Reviews received at journal 06 Aug, 2024 Reviewers agreed at journal 03 Aug, 2024 Reviewers agreed at journal 02 Aug, 2024 Reviewers agreed at journal 02 Aug, 2024 Reviewers agreed at journal 02 Aug, 2024 Reviewers agreed at journal 02 Aug, 2024 Reviewers invited by journal 02 Aug, 2024 Editor assigned by journal 02 Aug, 2024 Submission checks completed at journal 02 Aug, 2024 First submitted to journal 31 Jul, 2024 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-4834124","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":340683654,"identity":"75c753c0-2532-4fed-9951-11b737608793","order_by":0,"name":"Muhammad Asif","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA5UlEQVRIiWNgGAWjYFACxoYPDAwHGPiBrAMMDMxAETaCWhpngLRINoBI4rQwMIK1GBwgVgt//+HGBsYddxI3XzsD1FVhndgg3ZaAV4vEjUSgljPPErfdzgFqOZOe2CBz7AB+a24wtj9gbDsM0QJiNEikN+DVIX/+INAWoMrNs0Fa/hGhxeBAIkTLBmmQlgaQljT8DjME+SXxzGHjGbfTCg4kHEs3bpM5loBXi9z54w8bPu44LNs/O3njgw811rL90m0GeLWAQWIDgyPY/SDj2SQIawClGQZ7BI8oLaNgFIyCUTCSAACQqVa77kdAXAAAAABJRU5ErkJggg==","orcid":"","institution":"Minhaj University Lahore","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Muhammad","middleName":"","lastName":"Asif","suffix":""},{"id":340683655,"identity":"4a9eb33b-f1c4-4573-a2e6-abdbc02072c5","order_by":1,"name":"Rehan Saeed","email":"","orcid":"","institution":"Minhaj University Lahore","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Rehan","middleName":"","lastName":"Saeed","suffix":""},{"id":340683656,"identity":"b3bd0ff3-3ea6-449d-b4db-dcbca2279748","order_by":2,"name":"M. 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Various techniques, including Crystallographic X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), high-resolution scanning electron microscopy (HRSEM), vibrating sample magnetometer (VSM), and UV-vis spectroscopy, were used to study their structural, morphological, magnetic, and optical parameters. The XRD patterns indicated the formation of a single-phase nanocrystalline structure, with an increase in lattice constant due to Lanthanum substitution. FTIR spectrum confirmed the presence of the M-O stretching band and facilitated a study of functional groups. HRSEM images exhibited the formation of uniform, cubic, spherical nanoparticles with gentle agglomerations. The VSM study highlighted alterations in saturation magnetizationM\u003csub\u003eS\u003c/sub\u003e, remanenceM\u003csub\u003eR\u003c/sub\u003e, coercivityH\u003csub\u003eC\u003c/sub\u003e, and Y-K angles, indicative of the impact of La3+ ions. 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