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http://hdl.handle.net/2445/36355
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DC Field | Value | Language |
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dc.contributor.author | Martínez Boubeta, José Carlos | - |
dc.contributor.author | Botana, Antía S. | - |
dc.contributor.author | Pardo, Víctor | - |
dc.contributor.author | Baldomir, Daniel | - |
dc.contributor.author | Antony, Aldrin | - |
dc.contributor.author | Bertomeu i Balagueró, Joan | - |
dc.contributor.author | Rebled, J. M. (José Manuel) | - |
dc.contributor.author | López Conesa, Lluís | - |
dc.contributor.author | Estradé Albiol, Sònia | - |
dc.contributor.author | Peiró Martínez, Francisca | - |
dc.date.accessioned | 2013-04-26T09:50:01Z | - |
dc.date.available | 2013-04-26T09:50:01Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/2445/36355 | - |
dc.description.abstract | We report on a growth study of MgO films deposited on Al2O3(0001) substrates by magnetron sputtering. The films exhibited a preferred rocksalt MgO(111) orientation. Surprisingly, depending on the O2 gas flow ratio, a structure of graphiticlike wurtzite MgO(0001) has been revealed. The observed Mg-O perpendicular bond length reduction is accompanied by an atomically flat surface morphology for the development of MgO(111) films; the transition to the bulk rocksalt structure occurs in the 3-6 nm coverage range. Previously, relaxation of the electrostatic instability of MgO(111) films accompanied by an in-plane lattice increase has been suggested theoretically [Phys. Rev. Lett. 98, 205701 (2007)]. Here, relying on ab initio calculations, we infer that Mg vacancies facilitate the lattice match with the substrate. This mechanism suggests methods to engineer oxide heterostructures. | - |
dc.format.extent | 5 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevB.86.041407 | - |
dc.relation.ispartof | Physical Review B, 2012, vol. 86, num. 4, p. 041407-1-041407-5 | - |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevB.86.041407 | - |
dc.rights | (c) American Physical Society, 2012 | - |
dc.source | Articles publicats en revistes (Física Aplicada) | - |
dc.subject.classification | Pel·lícules fines | - |
dc.subject.classification | Òxids metàl·lics | - |
dc.subject.classification | Cristal·lografia | - |
dc.subject.classification | Estructura electrònica | - |
dc.subject.classification | Superconductors | - |
dc.subject.classification | Optoelectrònica | - |
dc.subject.other | Thin films | - |
dc.subject.other | Metallic oxides | - |
dc.subject.other | Crystallography | - |
dc.subject.other | Electronic structure | - |
dc.subject.other | Superconductors | - |
dc.subject.other | Optoelectronics | - |
dc.title | Heteroepitaxial growth of MgO(111) thin films on Al2O3(0001): Evidence of a wurtzite to rocksalt transformation | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 616402 | - |
dc.date.updated | 2013-04-26T09:50:01Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Aplicada) |
Files in This Item:
File | Description | Size | Format | |
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616402.pdf | 950.75 kB | Adobe PDF | View/Open |
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