dc.contributor | Feitosa, Carlos Chesman de Araújo | |
dc.contributor | | |
dc.contributor | http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4705312H6 | |
dc.contributor | | |
dc.contributor | http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780822J1 | |
dc.contributor | Albuquerque, Eudenilson Lins de | |
dc.contributor | | |
dc.contributor | http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783172H5 | |
dc.contributor | Bezerra, Claudionor Gomes | |
dc.contributor | | |
dc.contributor | http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780822H8 | |
dc.contributor | Soares, Edmar Avellar | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/8885496748170584 | |
dc.contributor | Castilho, Caio Mário de | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/5927149543717327 | |
dc.creator | Gonçalves, Charlie Salvador | |
dc.date.accessioned | 2015-02-25 | |
dc.date.accessioned | 2015-03-03T15:16:24Z | |
dc.date.accessioned | 2022-10-06T13:32:28Z | |
dc.date.available | 2015-02-25 | |
dc.date.available | 2015-03-03T15:16:24Z | |
dc.date.available | 2022-10-06T13:32:28Z | |
dc.date.created | 2015-02-25 | |
dc.date.created | 2015-03-03T15:16:24Z | |
dc.date.issued | 2010-02-26 | |
dc.identifier | GONÇALVES, Charlie Salvador. Propriedades fisicas do monocristal fe/mgo(100) e estudo da expansao termica da superficie da ag(100). 2010. 146 f. Tese (Doutorado em Física da Matéria Condensada; Astrofísica e Cosmologia; Física da Ionosfera) - Universidade Federal do Rio Grande do Norte, Natal, 2010. | |
dc.identifier | https://repositorio.ufrn.br/jspui/handle/123456789/18617 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3970094 | |
dc.description.abstract | In this work we have developed a way to grow Fe/MgO(100) monocrystals by magnetron sputtering DC. We investigated the growing in a temperature range among 100 oC and 300 oC. Structural and magneto-crystalline properties were studied by different experimental techniques. Thickness and surface roughness of the films were investigated by atomic force microscopy, while magneto-crystalline properties were investigated by magneto-optical Kerr effect and ferromagnetic resonance. Our results show that as we increase the deposition temperature, the magneto-crystalline anisotropy of the films also increases, following the equation
of Avrami. The best temperature value to make a film is 300 oC. As the main result, we built a base of magnetoresistence devices and as an aplication, we present measurements of Fe/Cr/Fe trilayer coupling. In a second work we investigated
the temperature dependence of the first three interlayer spacings of Ag(100) surface using low energy electron diffraction. A linear expansion model of crystal surface
was used and the values of Debye temperatures of the first two layers and thermal expansion coefficient were determinated. A relaxation of 1% was found for Ag(100)
surface and these results are matched with faces (110) and (111) of the silver. iv | |
dc.publisher | Universidade Federal do Rio Grande do Norte | |
dc.publisher | BR | |
dc.publisher | UFRN | |
dc.publisher | Programa de Pós-Graduação em Física | |
dc.publisher | Física da Matéria Condensada; Astrofísica e Cosmologia; Física da Ionosfera | |
dc.rights | Acesso Aberto | |
dc.subject | Filmes monocristalinos | |
dc.subject | propriedades estruturais | |
dc.subject | ectroscopia | |
dc.subject | propriedades magnéticas | |
dc.subject | ressonância ferromagnética | |
dc.subject | Thin films | |
dc.subject | monocrystalline films | |
dc.subject | spectroscopy | |
dc.subject | Magnetic properties | |
dc.subject | ferromagnetic resonance | |
dc.title | Propriedades fisicas do monocristal fe/mgo(100) e estudo da expansao termica da superficie da ag(100) | |
dc.type | doctoralThesis | |