dc.contributor | Vagner Eustaquio de Carvalho | |
dc.contributor | Edmar Avellar Soares | |
dc.contributor | Andre Santarosa Ferlauto | |
dc.contributor | Mario Luiz Viana Alvarenga | |
dc.creator | Diogo Duarte dos Reis | |
dc.date.accessioned | 2019-08-13T23:20:46Z | |
dc.date.accessioned | 2022-10-04T01:06:06Z | |
dc.date.available | 2019-08-13T23:20:46Z | |
dc.date.available | 2022-10-04T01:06:06Z | |
dc.date.created | 2019-08-13T23:20:46Z | |
dc.date.issued | 2010-03-12 | |
dc.identifier | http://hdl.handle.net/1843/IACO-84RRPD | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3838781 | |
dc.description.abstract | In this work, we present the results of the atomic geometry determination of the clean Au(110)-(1x2) surface and with the adsorption of antimony by Low Energy Electron Diffraction (LEED). The Au(110)-(1x2) clean surface presents a reconstruction called missing row, which consists of an alternated removed atomic rows of the surface. In our LEED analysis, we found a large relaxation of the first layer, and a buckling in the third and fifth layers and also a pairing of atomic rows in the second and fourth layers, confforming the results found in the literature. For the system Au(110)-c(2x2)Sb we found that the surface rearranges in the structure (1x1) with antimony atoms occupying highly simetrical hollow sites, forming an overlayer over the Au(110)-(1x1) surface. These results dier from results of the literature, in which the Sb atoms occupy substitutionals sites in the rst layer forming a surface alloy. Our results are in very good agreement with recently performed ab initio calculations (DFT). | |
dc.publisher | Universidade Federal de Minas Gerais | |
dc.publisher | UFMG | |
dc.rights | Acesso Aberto | |
dc.subject | Espalhamento | |
dc.subject | Cristalografia de superfície | |
dc.subject | Difração de Elétrons de Baixa Energia | |
dc.subject | LEED | |
dc.subject | Geometria atômica | |
dc.title | Estudo da geometria atômica dos sistemas Au(110) e Au(110)-Sb. | |
dc.type | Dissertação de Mestrado | |