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CQVR","award":["UIDP\/04968\/2020"],"award-info":[{"award-number":["UIDP\/04968\/2020"]}]},{"name":"IFIMUP","award":["NORTE-01-0145-FEDER-0000084"],"award-info":[{"award-number":["NORTE-01-0145-FEDER-0000084"]}]},{"name":"IFIMUP","award":["CERN\/FIS-NUC\/0003\/2021"],"award-info":[{"award-number":["CERN\/FIS-NUC\/0003\/2021"]}]},{"name":"IFIMUP","award":["PTDC\/NAN-MAT\/0098\/2020"],"award-info":[{"award-number":["PTDC\/NAN-MAT\/0098\/2020"]}]},{"name":"IFIMUP","award":["UIDB\/QUI\/00616\/2020"],"award-info":[{"award-number":["UIDB\/QUI\/00616\/2020"]}]},{"name":"IFIMUP","award":["UIDP\/04968\/2020"],"award-info":[{"award-number":["UIDP\/04968\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In this work, we investigated the MOCVD conditions to synthesize thin films with the hexagonal P63cm\u00a0h-LuMnO3 phase as a potential low-band gap ferroelectric material. The main parameters investigated were the ratio of organometallic starting materials, substrate temperature, and annealing effect. Two different substrates were used in the study: fused silica (SiO2) glass and platinized silicon (Pt\\Ti\\SiO2\\Si(100)). In order to investigate the thermodynamic stability and quality of the developed phases, a detailed analysis of the crystal structure, microstructure, morphology, and roughness of the films was performed by X-ray diffractometer, scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), Raman spectroscopy, and piezoelectric force microscopy (PFM). Molar compositions in the film within 0.93 &lt; |Lu|\/|Mn| &lt; 1.33 were found to be suitable for obtaining a single-phase h-LuMnO3. The best films were obtained by depositions at 700 \u00b0C, followed by thermal treatments at 800 \u00b0C for long periods of up to 12 h. These films exhibited a highly crystalline hexagonal single phase with a relatively narrow direct band gap, around 1.5 eV, which is within the expected values for the h-LuMnO3 system.<\/jats:p>","DOI":"10.3390\/ma17010211","type":"journal-article","created":{"date-parts":[[2023,12,31]],"date-time":"2023-12-31T04:51:51Z","timestamp":1703998311000},"page":"211","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Growth and Structural Characterization of h-LuMnO3 Thin Films Deposited by Direct MOCVD"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2845-7216","authenticated-orcid":false,"given":"Abderrazzak","family":"Ait Bassou","sequence":"first","affiliation":[{"name":"Centro de Qu\u00edmica-Vila Real (CQVR), Departamento F\u00edsica, Escola de Ci\u00eancias e Tecnologia (ECT), Universidade de Tr\u00e1s-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal"}]},{"given":"Lisete","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica-Vila Real (CQVR), Unidade de Microscopia Eletr\u00f3nica-Centro de Investiga\u00e7\u00e3oe Desenvolvimento (UME\/CIDE), Universidade de Tr\u00e1s-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3300-2606","authenticated-orcid":false,"given":"Jos\u00e9 R.","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica-Vila Real (CQVR), Departamento F\u00edsica, Escola de Ci\u00eancias e Tecnologia (ECT), Universidade de Tr\u00e1s-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7841-9731","authenticated-orcid":false,"given":"F\u00e1bio G.","family":"Figueiras","sequence":"additional","affiliation":[{"name":"Instituto de F\u00edsica de Materiais Avan\u00e7ados, Nanotecnologia e Fot\u00f3nica (IFIMUP), Departamento F\u00edsica e Astronomia, Faculdade Ci\u00eancias, Universidade Porto, 687, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7589-1299","authenticated-orcid":false,"given":"Pedro B.","family":"Tavares","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica-Vila Real (CQVR), Departamento Qu\u00edmica, Escola de Ci\u00eancias da Vida e do Ambiente (ECVA), Universidade de Tr\u00e1s-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,30]]},"reference":[{"key":"ref_1","first-page":"1335","article-title":"Novel multiferroic state and ME enhancement by breaking the AFM frustration in LuMn1\u2212xO3","volume":"19","author":"Figueiras","year":"2017","journal-title":"Phys. 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