Growth and morphology of the epitaxial Fe(110)/MgO(111)/Fe(110) Trilayers

SURFACE SCIENCE

卷:601

Article

Fonin, M. ; Dedkov, Yu. S. ; Ruediger, U. ; Guentherodt, G.

关键词: MgO;    Fe(110);    LEED;    STM;   

DOI  :  10.1016/j.susc.2007.03.006

来源: Elsevier

【 摘 要 】

Growth and surface morphology of epitaxial Fe(110)/MgO(111)/Fe(110) trilayers constituting a magnetic tunnel junction were investigated by low-energy electron diffraction (LEED) and scanning tunneling microscopy (STM). STM reveals a grain-like growth mode of MgO on Fe(110) resulting in dense MgO(111) films at room temperature as well as at 250 degrees C. As observed by STM, initial deposition of MgO leads to a partial oxidation of the Fe(110) surface which is confirmed by Auger electron spectroscopy. The top Fe layer deposited on MgO(111) at room temperature is relatively rough consisting of clusters which can be transformed by annealing to an atomically flat epitaxial Fe(110) film. (c) 2007 Elsevier B.V. All rights reserved.

【 授权许可】

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