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Title: Structural and magnetic properties of Fe on Cu84Al 16(100)
Title of periodic: Physica Status Solidi A
metadata.dc.title.subtitlejournal: Applications and Materials Science
Authors: Martins, Maximiliano Delany
Macedo, Waldemar Augusto de Almeida
Affiliation: Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil
Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil
Issue Date: 2002
Keywords: Thin films;iron;magnetic properties;copper alloys;aluminium alloys
Abstract: The structure and magnetism of epitaxial ultrathin Fe films deposited on Cu84Al 16(100) single crystal have been investigated by electron diffraction and surface magneto-optical Kerr effect (SMOKE). The correlation between structural and magnetic properties was explored for Fe films grown at two different temperatures, 160 K (LT) and 300 K (RT). The results show that the Fe films on Cu84Al16(100) undergo a sensitive structural change, starting from a critical thickness, which depends on the deposition temperature. The critical thickness was estimated as approximately 2 atomic monolayers (ML) and approximately 10 ML for Fe films deposited at LT and RT, respectively. The SMOKE measurements show that the Fe films deposited at RT are non-magnetic up to approximately 10 ML, whereas the Fe films deposited at LT are ferromagnetic, starting from approximately 1.5 ML. The magnetic anisotropy of the LT-grown films changes from out-of-plane to in-plane at approximately 3.5 ML Fe. The spin reorientation transition in the LT-grown Fe ultrathin films is connected to a fcc (100) to bcc (110) astructural transformation.
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