Indução de um eixo fácil de magnetização utilizando máscaras de sombreamento em filmes finos de CoFeB

• Ano de defesa: 2012
• Autor(a) principal: Fenalti, Veridiana dos Santos
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Física; UFSM; Programa de Pós-Graduação em Física
• Palavras-chave em Português: Filmes finos; Magnetização; Máscaras de sombreamento; Thin films; Magnetization; Shading masks; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/9222

CoFeB thin films were produced using the technique of magnetronsputtering. Six samples were produced magnetic thin films with two different thicknesses, using different settings for shading masks. For each film were made two measurements of magnetization, a parallel to the easy axis of magnetization, and the other perpendicular to the axis. The films produced with shading masks non-magnetic show a deteriorated magnetic configuration compared to those produced with magnetic material with a cut. Different thicknesses of the films provide different values in the coercive field of the sample. The thicker films have an increase in the coercive field. With these results there is a possibility of making tunnel junctions measures aimed tunnel magneto-resistance with CoFeB films as an electrode.