Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study

Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study | 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 Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn 1-x Co x O Nanocomposites: Experimental and Theoretical Study Harish Kumar, Ram Mehar Singh, Ram Pal This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-309594/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 Doping of nanocomposites (NCs) with different metal oxide leads to a significant change in its structural, optical, electrical, mechanical, thermal, catalytic, and magnetic properties. The effect of the addition of CoO nanoparticles (NPs) on the structural, optical, electrical, and magnetic properties of Zn/CoO NCs have been investigated in detail. Zn 1-x Co x O NCs were synthesized by the sol-gel method followed by annealing at 400 0 C. The NCs were characterized by UV-visible, XRD, FTIR, TEM, and vibrating sample magnetometer (VSM) techniques. The structural and surface study was performed by X-ray diffraction and TEM techniques which shows spherical and cubical NCs with an average size of 25-55 nm. Computational study (DMol3, CASTEP, Forcite, and Reflex) was used to study the electronic and optical properties of metal NPs. The Co 2+ ions replace Zn 2+ ions in the ZnO lattice resulting a change in its structure from Wurtzite (ZnO NPs) to cubic Zn 1-x Co x O NCs. The lattice parameters, strain, and dislocation density were found to decrease with an increase in CoO concentration in Zn 1-x Co x O NCs. The saturation magnetization, retentivity, and coercivity were found to be lesser in Zn 1-x Co x O NCs. The synthesized cobalt doped Zn 1-x Co x O NCs can act as an efficient material for spintronic applications. Inorganic Chemistry Organic Chemistry Polymer Science Materials Chemistry Nanocomposites Spintronics Transition metals Sol-gel method Computational study. Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Full Text Highlights Doping of CoO on structural, electrical & magnetic properties of Zn/CoO NCs was studied. NCs were characterized by UV-visible, XRD, FTIR, TEM, and VSM Computational study (DMol3, CASTEP, Forcite, and Reflex modules) were used. Doping results in structural change from Wurtzite to Cubic of Zn 1-x Co x O Lattice parameters strain & dislocation density decreases with CoO concentration. Saturation magnetization, retentivity & coercivity was less in Zn 1-x Co x O Tables Table 1. Size, strain, lattice parameter, interplanar spacing and dislocation density of different CoO NPs doped Zn/CoO NCs. Sample Particle size (nm) Strain, ε (a.u.) Lattice Parameters (A o ) Interplanar spacing (d) (A o ) Dislocation Density (nm -2 ) D-S formula W-H Plot TEM Zn 0.7 Co 0.3 O 14.93 16.32 15-55 0.0074 a = 8.09 2.44 4.48 ×10 -3 Zn 0.5 Co 0.5 O 19.21 23.12 14-66 0.0083 a = 8.17 2.47 2.70 ×10 -3 Zn 0.3 Co 0.7 O 28.78 23.88 08-47 0.0042 a = 8.09 2.44 1.20 ×10 -3 Table 2. Magnetic properties of Zn 1-x OCo x O (x = 0, 0.7, and 1) NCs. Sample Saturation Magnetization ( M S ) emu/g Retentivity ( M r ) emu/g Coercivity ( O e ) Squareness ratio (R = M r /M s ) ZnO 0.203 9.600×10 -2 318.181 0.4729 CoO 0.393 1.625 ×10 -2 181.818 0.0413 Zn 0.3 Co 0.7 O 0.196 1.000 ×10 -2 136.360 0.0510 Supplementary Files GraphicalAbstract.docx 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-309594","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":15800862,"identity":"d9954f46-2163-4d1c-945d-a2eb1d03ad54","order_by":0,"name":"Harish Kumar","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA60lEQVRIiWNgGAWjYBACAyA+AMSMDczMDQc+AFls7MRrYWw8OAOkhZkILQxgLQyMzYd5QExCWszZzz48dKPisOx8d8aGwza/tsnzMTMwfviYg1uLZU+6weGcM4eNNx4Gasntu23YxszALDlzGx6HHUhjOJzbdjhxYzNIS89tRqAWNmZefFrOP0PSYtlz256wlhtQW+YzA7Uw/LidSIQWoC05Z9KNNwC1HOxtuJ3cxszYjN8v59OYP+dUWMvO7z98+MOPP7dt57c3H/zwEY8WhN4DQIKxDcQExhFRQB6s7g9xikfBKBgFo2BkAQCfOFuNWMuqAAAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-8559-2302","institution":"Department of Chemistry, Central University Haryana","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Harish","middleName":"","lastName":"Kumar","suffix":""},{"id":15800863,"identity":"1b07a7e7-90ab-4cab-b129-180ab95b0734","order_by":1,"name":"Ram Mehar Singh","email":"","orcid":"","institution":"Department of Physics, Ch. Devi Lal University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Ram","middleName":"Mehar","lastName":"Singh","suffix":""},{"id":15800864,"identity":"9f7c6bae-cb54-4fc1-ac61-1961e3a7c638","order_by":2,"name":"Ram Pal","email":"","orcid":"","institution":"Department of Physics, Ch. Devi Lal University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Ram","middleName":"","lastName":"Pal","suffix":""}],"badges":[],"createdAt":"2021-03-08 11:11:38","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-309594/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-309594/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":7128190,"identity":"d73c47ba-e770-4571-bedf-20913ef403a7","added_by":"auto","created_at":"2021-03-18 22:40:06","extension":"jpg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":35259,"visible":true,"origin":"","legend":"(a) XRD pattern and (b) W-H plot of ZnO nanoparticles.","description":"","filename":"fig1.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/e481df9a6eb8d62ad3acad7d.jpg"},{"id":7128869,"identity":"73ccba17-89a6-4b16-9db4-2cf7f58d4172","added_by":"auto","created_at":"2021-03-18 22:46:06","extension":"jpg","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":50137,"visible":true,"origin":"","legend":"XRD pattern of CoO nanoparticle (A), and W-H plot of CoO nanoparticles (B). ","description":"","filename":"fig2.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/be0ea82821c32eae75c7c18a.jpg"},{"id":7128198,"identity":"f6abdfae-e33b-4dce-90b9-3a50efeee8a7","added_by":"auto","created_at":"2021-03-18 22:40:06","extension":"jpg","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":53102,"visible":true,"origin":"","legend":"XRD pattern of (A)Zn0.3CoO0.7 (B) Zn0.5 CoO0.5 (C) Zn0.7 CoO0.3 nanocomposites.","description":"","filename":"fig3.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/b913c1464c02d1300f0ed040.jpg"},{"id":7128871,"identity":"07595d68-d08d-416b-b33a-bbdf0202c634","added_by":"auto","created_at":"2021-03-18 22:46:06","extension":"jpg","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":37285,"visible":true,"origin":"","legend":"W-H plot of Zn0.3 CoO0.7 (A), Zn0.5 CoO0.5 (B), and Zn0.7 CoO0.3 nanocomposites (C). ","description":"","filename":"fig4.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/97702f076427c18c639e055c.jpg"},{"id":7128443,"identity":"8c05f5a0-d265-42b6-ae8c-ce8637def10f","added_by":"auto","created_at":"2021-03-18 22:43:06","extension":"jpg","order_by":5,"title":"Figure 5","display":"","copyAsset":false,"role":"figure","size":57894,"visible":true,"origin":"","legend":"FTIR spectra of ZnO nanoparticles (A) and CoO nanoparticles (B). ","description":"","filename":"fig5.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/2d1eb12f4a054e39f8fe2074.jpg"},{"id":7128199,"identity":"ea48c46a-edd2-4482-918b-0105d17e242e","added_by":"auto","created_at":"2021-03-18 22:40:06","extension":"jpg","order_by":6,"title":"Figure 6","display":"","copyAsset":false,"role":"figure","size":184439,"visible":true,"origin":"","legend":"FTIR spectra of Zn0.7 CoO0.3 (A), Zn0.5 CoO0.5 (B), and Zn0.3CoO0.7 nanocomposites (C). ","description":"","filename":"fig6.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/dc69047da78b7aa3e04f050c.jpg"},{"id":7129130,"identity":"78789310-4439-4f8d-896a-53bd4636595a","added_by":"auto","created_at":"2021-03-18 22:49:06","extension":"jpg","order_by":7,"title":"Figure 7","display":"","copyAsset":false,"role":"figure","size":97255,"visible":true,"origin":"","legend":"TEM images of (A) ZnO and CoO nanoparticles (B). ","description":"","filename":"fig7.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/f0544d64d2f6d875074ef5a1.jpg"},{"id":7128440,"identity":"83daa693-afbc-40ac-952d-cfc21b569217","added_by":"auto","created_at":"2021-03-18 22:43:06","extension":"jpg","order_by":8,"title":"Figure 8","display":"","copyAsset":false,"role":"figure","size":95430,"visible":true,"origin":"","legend":"TEM Images of ZnO0.7CoO0.3 (A) ZnO0.5 CoO0.5 (B) ZnO0.3 CoO0.7 (C) nanocomposites. ","description":"","filename":"fig8.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/e5f2633a6fe308eb8c385f96.jpg"},{"id":7128868,"identity":"60fc310a-ba44-48ce-9a4c-e38e53bbadf2","added_by":"auto","created_at":"2021-03-18 22:46:06","extension":"jpg","order_by":9,"title":"Figure 9","display":"","copyAsset":false,"role":"figure","size":38500,"visible":true,"origin":"","legend":"M-H curves of ZnO nanoparticles (A), CoO nanoparticles (B), and ZnO0.3 CoO0.7 nanocomposites (C).","description":"","filename":"fig9.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/2b25d47110dbfaa65e30000a.jpg"},{"id":7128441,"identity":"099dbfed-68bc-4c88-962a-d188dc72ef5c","added_by":"auto","created_at":"2021-03-18 22:43:06","extension":"jpg","order_by":10,"title":"Figure 10","display":"","copyAsset":false,"role":"figure","size":46367,"visible":true,"origin":"","legend":"UV-visible absorption spectra of CoO (A), and ZnO nanoparticles (B) and ZnO/CoO nanocomposites (C).","description":"","filename":"fig10.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/c53b24bca02b7a85071f44b6.jpg"},{"id":7128201,"identity":"6528f2f5-8a35-4ef1-8282-efcfda637432","added_by":"auto","created_at":"2021-03-18 22:40:06","extension":"jpg","order_by":11,"title":"Figure 11","display":"","copyAsset":false,"role":"figure","size":437073,"visible":true,"origin":"","legend":"CASTEP band structure (A), CASTEP Density of States (B), Forcite radial distribution function (C), XRD (D), 3D molecular plane (E), 3D molecular crystal structure showing reciprocal lattice and Brillouin zone paths (F) of ZnO nanoparticles obtained from Materials Studio 2017 software. ","description":"","filename":"fig11.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/1ef46762c84640e3bda4e183.jpg"},{"id":7128202,"identity":"dc16907e-b5f6-4f57-b79f-647436892708","added_by":"auto","created_at":"2021-03-18 22:40:07","extension":"jpg","order_by":12,"title":"Figure 12","display":"","copyAsset":false,"role":"figure","size":574130,"visible":true,"origin":"","legend":"Dmol3 band structure (A), DMol3 Density of States (B), Forcite radial distribution function (C), XRD (D), 3D molecular crystal structure showing reciprocal lattice and Brillouin zone paths (E), 3D molecular plane (F), Ball and stick model (G) of CoO nanoparticles obtained from Materials Studio 2017 software.","description":"","filename":"fig12.jpg","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/910db15051ec06ed1481e19d.jpg"},{"id":13609535,"identity":"1ccb5df6-2f19-4222-a4be-41040858ce78","added_by":"auto","created_at":"2021-09-17 06:20:39","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1011211,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript08.03.2021.pdf","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1_covered.pdf"},{"id":9451849,"identity":"17461629-39fe-4549-82dd-353036e520a9","added_by":"auto","created_at":"2021-05-21 21:16:30","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1007678,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript08.03.2021.pdf","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1_covered.pdf"},{"id":7129652,"identity":"581f0992-a2fd-48f5-8b33-36576b27ed71","added_by":"auto","created_at":"2021-03-18 22:52:10","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":655721,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript08.03.2021.pdf","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1_stamped.pdf"},{"id":7128437,"identity":"18488ee4-a804-4089-8e93-6a67db9a9993","added_by":"auto","created_at":"2021-03-18 22:43:06","extension":"docx","order_by":2,"title":"","display":"","copyAsset":false,"role":"supplement","size":1717666,"visible":true,"origin":"","legend":"","description":"","filename":"GraphicalAbstract.docx","url":"https://assets-eu.researchsquare.com/files/rs-309594/v1/d5c4ec4beaae164d8e0d75e4.docx"}],"financialInterests":"","formattedTitle":"\u003cp\u003eImpact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO Nanocomposites: Experimental and Theoretical Study\u003c/p\u003e","fulltext":[{"header":"Full Text","content":"\u003cp\u003eThis preprint is available for \u003ca href='/article/rs-309594/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e.\u003c/p\u003e"},{"header":"Highlights","content":"\u003cul\u003e\n\u003cli\u003eDoping of CoO on structural, electrical \u0026amp; magnetic properties of Zn/CoO NCs was studied.\u003c/li\u003e\n\u003cli\u003eNCs were characterized by UV-visible, XRD, FTIR, TEM, and VSM\u003c/li\u003e\n\u003cli\u003eComputational study (DMol3, CASTEP, Forcite, and Reflex modules) were used.\u003c/li\u003e\n\u003cli\u003eDoping results in structural change from Wurtzite to Cubic of Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO\u003c/li\u003e\n\u003cli\u003eLattice parameters strain \u0026amp; dislocation density decreases with CoO concentration.\u003c/li\u003e\n\u003cli\u003eSaturation magnetization, retentivity \u0026amp; coercivity was less in Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO\u003c/li\u003e\n\u003c/ul\u003e"},{"header":"Tables","content":"\u003cp\u003e\u003cstrong\u003eTable 1. \u003c/strong\u003eSize, strain, lattice parameter, interplanar spacing and dislocation density of different CoO NPs doped\u0026nbsp;Zn/CoO NCs.\u003c/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" width=\"132\"\u003e\n\u003cp\u003e\u003cstrong\u003eSample\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd colspan=\"3\" width=\"204\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u0026nbsp;\u0026nbsp; \u0026nbsp;Particle size (nm)\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd rowspan=\"2\" width=\"84\"\u003e\n\u003cp\u003e\u003cstrong\u003eStrain, \u003c/strong\u003e\u003cstrong\u003e\u0026epsilon; (a.u.)\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd rowspan=\"2\" width=\"120\"\u003e\n\u003cp\u003e\u003cstrong\u003eLattice Parameters \u003c/strong\u003e\u003cstrong\u003e(A\u003csup\u003eo\u003c/sup\u003e)\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd rowspan=\"2\" width=\"122\"\u003e\n\u003cp\u003e\u003cstrong\u003eInterplanar spacing (d) \u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003e(A\u003csup\u003eo\u003c/sup\u003e)\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd rowspan=\"2\" width=\"122\"\u003e\n\u003cp\u003e\u003cstrong\u003eDislocation Density (nm\u003csup\u003e-2\u003c/sup\u003e)\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"90\"\u003e\n\u003cp\u003e\u003cstrong\u003eD-S formula \u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"54\"\u003e\n\u003cp\u003e\u003cstrong\u003eW-H Plot \u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"60\"\u003e\n\u003cp\u003e\u003cstrong\u003eTEM\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"132\"\u003e\n\u003cp\u003eZn\u003csub\u003e0.7\u003c/sub\u003eCo\u003csub\u003e0.3\u003c/sub\u003eO\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"90\"\u003e\n\u003cp\u003e14.93\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"54\"\u003e\n\u003cp\u003e16.32\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"60\"\u003e\n\u003cp\u003e15-55\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"84\"\u003e\n\u003cp\u003e0.0074\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"120\"\u003e\n\u003cp\u003ea = 8.09\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"122\"\u003e\n\u003cp\u003e2.44\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"122\"\u003e\n\u003cp\u003e4.48 \u0026times;10\u003csup\u003e-3\u003c/sup\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"132\"\u003e\n\u003cp\u003eZn\u003csub\u003e0.5\u003c/sub\u003eCo\u003csub\u003e0.5\u003c/sub\u003e O\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"90\"\u003e\n\u003cp\u003e19.21\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"54\"\u003e\n\u003cp\u003e23.12\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"60\"\u003e\n\u003cp\u003e14-66\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"84\"\u003e\n\u003cp\u003e0.0083\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"120\"\u003e\n\u003cp\u003ea = 8.17\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"122\"\u003e\n\u003cp\u003e2.47\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"122\"\u003e\n\u003cp\u003e2.70 \u0026times;10\u003csup\u003e-3\u003c/sup\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"132\"\u003e\n\u003cp\u003e\u0026nbsp;Zn\u003csub\u003e0.3\u003c/sub\u003e Co\u003csub\u003e0.7\u003c/sub\u003e O\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"90\"\u003e\n\u003cp\u003e28.78\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"54\"\u003e\n\u003cp\u003e23.88\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"60\"\u003e\n\u003cp\u003e08-47\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"84\"\u003e\n\u003cp\u003e0.0042\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"120\"\u003e\n\u003cp\u003ea = 8.09\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"122\"\u003e\n\u003cp\u003e2.44\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd width=\"122\"\u003e\n\u003cp\u003e1.20 \u0026times;10\u003csup\u003e-3\u003c/sup\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr /\u003eTable 2. \u003c/strong\u003eMagnetic properties of Zn\u003csub\u003e1-x\u003c/sub\u003eOCo\u003csub\u003ex\u003c/sub\u003eO (x = 0, 0.7, and 1) NCs.\u003c/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 92px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eSample\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 170px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eSaturation Magnetization (\u003cem\u003eM\u003csub\u003eS\u003c/sub\u003e\u003c/em\u003e)\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eemu/g\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 128px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eRetentivity (\u003cem\u003eM\u003csub\u003er\u003c/sub\u003e\u003c/em\u003e)\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eemu/g\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 118px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eCoercivity (\u003cem\u003eO\u003csub\u003ee\u003c/sub\u003e\u003c/em\u003e)\u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 108px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eSquareness ratio (R = \u003cem\u003eM\u003csub\u003er\u003c/sub\u003e/M\u003csub\u003es\u003c/sub\u003e\u003c/em\u003e) \u003c/strong\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 92px;\"\u003e\n\u003cp\u003eZnO\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 170px;\"\u003e\n\u003cp\u003e0.203\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 128px;\"\u003e\n\u003cp\u003e9.600\u0026times;10\u003csup\u003e-2\u003c/sup\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 118px;\"\u003e\n\u003cp\u003e318.181\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 108px;\"\u003e\n\u003cp\u003e0.4729\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 92px;\"\u003e\n\u003cp\u003eCoO\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 170px;\"\u003e\n\u003cp\u003e0.393\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 128px;\"\u003e\n\u003cp\u003e1.625 \u0026times;10\u003csup\u003e-2\u003c/sup\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 118px;\"\u003e\n\u003cp\u003e181.818\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 108px;\"\u003e\n\u003cp\u003e0.0413\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 92px;\"\u003e\n\u003cp\u003eZn\u003csub\u003e0.3\u003c/sub\u003eCo\u003csub\u003e0.7\u003c/sub\u003eO\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 170px;\"\u003e\n\u003cp\u003e0.196\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 128px;\"\u003e\n\u003cp\u003e1.000 \u0026times;10\u003csup\u003e-2\u003c/sup\u003e\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 118px;\"\u003e\n\u003cp\u003e136.360\u003c/p\u003e\n\u003c/td\u003e\n\u003ctd style=\"width: 108px;\"\u003e\n\u003cp\u003e0.0510\u003c/p\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"}],"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":false,"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":"Nanocomposites, Spintronics, Transition metals, Sol-gel method, Computational study.","lastPublishedDoi":"10.21203/rs.3.rs-309594/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-309594/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eDoping of nanocomposites (NCs) with different metal oxide leads to a significant change in its structural, optical, electrical, mechanical, thermal, catalytic, and magnetic properties. The effect of the addition of CoO nanoparticles (NPs) on the structural, optical, electrical, and magnetic properties of Zn/CoO NCs have been investigated in detail. Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO NCs were synthesized by the sol-gel method followed by annealing at 400\u003csup\u003e0\u003c/sup\u003eC. The NCs were characterized by UV-visible, XRD, FTIR, TEM, and vibrating sample magnetometer (VSM) techniques. The structural and surface study was performed by X-ray diffraction and TEM techniques which shows spherical and cubical NCs with an average size of 25-55 nm. Computational study (DMol3, CASTEP, Forcite, and Reflex) was used to study the electronic and optical properties of metal NPs. The Co\u003csup\u003e2+\u003c/sup\u003e ions replace Zn\u003csup\u003e2+\u003c/sup\u003e ions in the ZnO lattice resulting a change in its structure from Wurtzite (ZnO NPs) to cubic Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO NCs. The lattice parameters, strain, and dislocation density were found to decrease with an increase in CoO concentration in Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO NCs. The saturation magnetization, retentivity, and coercivity were found to be lesser in Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO NCs. The synthesized cobalt doped Zn\u003csub\u003e1-x\u003c/sub\u003eCo\u003csub\u003ex\u003c/sub\u003eO NCs can act as an efficient material for spintronic applications.\u003c/p\u003e","manuscriptTitle":"Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2021-03-18 22:40:04","doi":"10.21203/rs.3.rs-309594/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":"aea73253-dcd8-4aee-94dd-fd7291d5d100","owner":[],"postedDate":"March 18th, 2021","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":3054765,"name":"Inorganic Chemistry"},{"id":3054766,"name":"Organic Chemistry"},{"id":3054767,"name":"Polymer Science"},{"id":3054768,"name":"Materials Chemistry"}],"tags":[],"updatedAt":"2021-05-21T21:16:17+00:00","versionOfRecord":[],"versionCreatedAt":"2021-03-18 22:40:04","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-309594","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-309594","identity":"rs-309594","version":["v1"]},"buildId":"cBFmMYwuxLRRLfASyISRj","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}