Carriço, Artur da SilvaAraújo, Ana Karollina Gomes de2014-12-172014-11-272014-12-172014-07-25ARAÚJO, Ana Karollina Gomes de. Caracterização magnética e estrutural de filmes depositados por gaiola catódica. 2014. 84 f. Dissertação (Mestrado em Física da Matéria Condensada; Astrofísica e Cosmologia; Física da Ionosfera) - Universidade Federal do Rio Grande do Norte, Natal, 2014.https://repositorio.ufrn.br/jspui/handle/123456789/16655Iron nitrite films, with hundred of nanometers thick, were deposited using the Cathodic cage plasma nitriding method, with a N2/H2 plasma, over a common glass substract. The structure, surface morphology and magnetic properties were investigated using X-ray diffractometry (XRD), atomic force microscopy (AFM) and vibrating sample magnetometer (VSM). XRD shows the formation of γ FeN phase and a combination of ζFe2N + ɛFe3N phases. The film s saturation magnetization and coercivity depends on morphology, composition, grain size and treatment temperature. Temperature raising from 250 ºC to 350 ºC were followed by an increase in saturation magnetization and film s surface coercivity on the parallel direction in relative proportion. This fact can be attributed to the grain sizes and to the different phases formed, since iron rich fases, like the ɛFe3N phase, emerges more frequently on more elevated treatment s temperature. Using this new and reasonably low cost method, it was possible to deposit films with both good adhesion and good magnetic properties, with wide application in magnetic devicesapplication/pdfAcesso AbertoGaiola catódica. Filmes de nitreto de ferro. Magnetização de saturaçãoCathodic cage. Iron nitride film. Saturation magnetizationmasterThesisCNPQ::CIENCIAS EXATAS E DA TERRA::FISICA