Thermophysical and Thermodynamic Properties of the Ternary Semiconductor Compound Au3in5se9 Over a Wide Temperature Range

Thermophysical and Thermodynamic Properties of the Ternary Semiconductor Compound Au3in5se9 Over a Wide Temperature Range | 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 Thermophysical and Thermodynamic Properties of the Ternary Semiconductor Compound Au3in5se9 Over a Wide Temperature Range Nadir Gahramanov, Suleyman Sarmasov This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8418260/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 work, the temperature dependence of the heat capacity of the ternary semiconductor compound \(\:Au₃In₅Se₉\) has been experimentally investigated over the temperature range 65–300 K using adiabatic calorimetry. Based on the experimental heat-capacity data, the principal thermodynamic functions-enthalpy and entropy-were determined by numerical integration. Special attention was paid to the analysis of the temperature evolution of the Debye characteristic temperature, which provides important information on lattice vibrational dynamics and phonon-related processes in the crystal. The Debye temperature was evaluated within the framework of a three-dimensional elastic-continuum model, considering the hexagonal crystal structure of the compound. The obtained results reveal a stable thermodynamic behaviour of \(\:Au₃In₅Se₉\) over the investigated temperature interval and demonstrate the influence of anharmonic lattice effects at elevated temperatures. The relationship between the thermal properties and the crystal structure of the compound is discussed, highlighting the relevance of the obtained data for further thermophysical modelling and potential thermoelectric applications. Ternary semiconductor compound heat capacity enthalpy entropy Debye temperature lattice dynamics crystal structure 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-8418260","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":592637141,"identity":"9e935579-9212-450f-bb15-33e1b1afdf25","order_by":0,"name":"Nadir Gahramanov","email":"","orcid":"","institution":"Baku State University","correspondingAuthor":false,"prefix":"","firstName":"Nadir","middleName":"","lastName":"Gahramanov","suffix":""},{"id":592637143,"identity":"c0278dbf-cf0a-4250-a365-05e43e060c4e","order_by":1,"name":"Suleyman Sarmasov","email":"data:image/png;base64,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","orcid":"","institution":"Baku State University","correspondingAuthor":true,"prefix":"","firstName":"Suleyman","middleName":"","lastName":"Sarmasov","suffix":""}],"badges":[],"createdAt":"2025-12-21 15:38:15","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-8418260/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-8418260/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":107944161,"identity":"1a5ac3bd-08f8-48d8-8143-0ffc05047c3d","added_by":"auto","created_at":"2026-04-27 21:24:14","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":394535,"visible":true,"origin":"","legend":"","description":"","filename":"THERMOPHYSICALANDTHERMODYNAMICPROPERTIESOFTHETERNARYSEMICONDUCTORCOMPOUNDAuInSeOVERAWIDETEMPERATURERANGE.pdf","url":"https://assets-eu.researchsquare.com/files/rs-8418260/v1_covered_46b65e35-590e-4409-a63c-ccdf0d7acbe5.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"\u003cp\u003eThermophysical and Thermodynamic Properties of the Ternary Semiconductor Compound Au3in5se9 Over a Wide Temperature Range\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"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":"Ternary semiconductor compound, heat capacity, enthalpy, entropy, Debye temperature, lattice dynamics, crystal structure","lastPublishedDoi":"10.21203/rs.3.rs-8418260/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8418260/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn this work, the temperature dependence of the heat capacity of the ternary semiconductor compound \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:Au₃In₅Se₉\\)\u003c/span\u003e\u003c/span\u003e has been experimentally investigated over the temperature range 65\u0026ndash;300 K using adiabatic calorimetry. Based on the experimental heat-capacity data, the principal thermodynamic functions-enthalpy and entropy-were determined by numerical integration. Special attention was paid to the analysis of the temperature evolution of the Debye characteristic temperature, which provides important information on lattice vibrational dynamics and phonon-related processes in the crystal. The Debye temperature was evaluated within the framework of a three-dimensional elastic-continuum model, considering the hexagonal crystal structure of the compound. The obtained results reveal a stable thermodynamic behaviour of \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:Au₃In₅Se₉\\)\u003c/span\u003e\u003c/span\u003e over the investigated temperature interval and demonstrate the influence of anharmonic lattice effects at elevated temperatures. 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