Correlation between magnetocaloric effect and crystal growth in La1.4Ca1.6Mn2O7

Correlation between magnetocaloric effect and crystal growth in La1.4Ca1.6Mn2O7 | 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 Correlation between magnetocaloric effect and crystal growth in La 1.4 Ca 1.6 Mn 2 O 7 Yuki Nakajima, Yoshiki Maruyama, Thou Dejun, Ovijit Chandrow, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8632775/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 9 You are reading this latest preprint version Abstract We present systematic studies of calcium-doped lanthanum manganite La$ {1.4}$Ca$ {1.6}$Mn$ 2$O$ 7$ with differing preparation conditions, focusing on the ferromagnetic to paramagnetic transition. Particle size increased with sintering temperature, but the lattice constant remained unchanged. The discontinuity in heat capacity at $T {¥rm C}$= 270 K showed a tendency to increase with rising heat treatment temperature. For the furnace-cooled sample at a heat treatment temperature of 1450 $^{¥circ}$C, the maximum magnetic entropy change was $¥Delta S {¥rm max}$= 6.0 J/kg K at 255 K. However, for the quench-cooled sample at the same sintering temperature of 1450 $^{¥circ}$C, despite the grain size being almost identical, $¥Delta S_{¥rm max}$ was only two-thirds of this value.This suggests that factors other than particle size and porosity also influence magnetic scattering. Ruddlesden-Popper type manganites Sintering temperature Magnetic entropy Magnetocaloric effent Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 08 Apr, 2026 Reviews received at journal 02 Mar, 2026 Reviewers agreed at journal 23 Feb, 2026 Reviews received at journal 12 Feb, 2026 Reviewers agreed at journal 26 Jan, 2026 Reviewers invited by journal 26 Jan, 2026 Editor assigned by journal 19 Jan, 2026 Submission checks completed at journal 19 Jan, 2026 First submitted to journal 18 Jan, 2026 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-8632775","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":581856993,"identity":"613ef762-bf56-4e30-8727-6d6668e810ac","order_by":0,"name":"Yuki Nakajima","email":"","orcid":"","institution":"Kanazawa University","correspondingAuthor":false,"prefix":"","firstName":"Yuki","middleName":"","lastName":"Nakajima","suffix":""},{"id":581856994,"identity":"6bc7cccd-b1bf-4713-89a9-4fad3225b9a6","order_by":1,"name":"Yoshiki Maruyama","email":"","orcid":"","institution":"Kanazawa 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La\u003csub\u003e1.4\u003c/sub\u003eCa\u003csub\u003e1.6\u003c/sub\u003eMn\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e7\u003c/sub\u003e\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"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":"journal-of-low-temperature-physics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"jltp","sideBox":"Learn more about [Journal of Low Temperature Physics](http://link.springer.com/journal/10909)","snPcode":"10909","submissionUrl":"https://submission.nature.com/new-submission/10909/3","title":"Journal of Low Temperature Physics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Ruddlesden-Popper type manganites, Sintering temperature, Magnetic entropy, Magnetocaloric effent","lastPublishedDoi":"10.21203/rs.3.rs-8632775/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8632775/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"We present systematic studies of calcium-doped lanthanum manganite La$_{1.4}$Ca$_{1.6}$Mn$_2$O$_7$ with differing preparation conditions, focusing on the ferromagnetic to paramagnetic transition. Particle size increased with sintering temperature, but the lattice constant remained unchanged. The discontinuity in heat capacity at $T_{¥rm C}$= 270 K showed a tendency to increase with rising heat treatment temperature. For the furnace-cooled sample at a heat treatment temperature of 1450 $^{¥circ}$C, the maximum magnetic entropy change was $¥Delta S_{¥rm max}$= 6.0 J/kg K at 255 K. However, for the quench-cooled sample at the same sintering temperature of 1450 $^{¥circ}$C, despite the grain size being almost identical, $¥Delta S_{¥rm max}$ was only two-thirds of this value.This suggests that factors other than particle size and porosity also influence magnetic scattering. 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