Nanoscale analysis of interfaces in a metal/oxide/oxide trilayer obtained by pulsed laser deposition

作者：Fix T^*; Ulhaq Bouillet C; Colis S; Dinia A; Bertoni G; Verbeeck J; Van Tendeloo G

来源：Applied Physics Letters, 2007, 91(2): 023106.

DOI：10.1063/1.2755699

Sr2FeMoO6/SrTiO3/CoFe2 trilayers grown by pulsed laser deposition on SrTiO3 (001) are investigated by transmission electron microscopy and electron energy loss spectroscopy. The stack is epitaxial, independent of whether the CoFe2 electrode is grown at 500 or at 50 degrees C. Thus it is possible to obtain epitaxy near room temperature. The SrTiO3/CoFe2 interface is quite sharp, while the Sr2FeMoO6/SrTiO3 interface presents regions of Fe depletion. The chemical composition of the films is close to the nominal stoichiometries. These results could be useful for the growth of heteroepitaxial devices and magnetic tunnel junctions.

• 出版日期2007-7-9