2024-03-29T12:32:24Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/189632020-03-17T13:21:12Zcom_10261_123com_10261_8com_10261_36com_10261_4col_10261_376col_10261_289
Spatial and chemical interface asymmetry in Fe/MgO/Fe(001) heterostructures
Palomares, F. Javier
Munuera, C.
Martínez Boubeta, Carlos
Cebollada, Alfonso
Iron
Magnesium compounds
Ferromagnetic materials
Magnetic epitaxial layers
Magnetic multilayers
Pulsed laser deposition
Annealing
Chemical interdiffusion
Surface segregation
Auger electron spectra
F. J. Palomares and C. Munuera
Instituto de Ciencia de Materiales de Madrid (CSIC), Cantoblanco, 28049 Madrid, Spain
C. Martínez Boubeta and A. Cebollada
Instituto de Microelectrónica de Madrid IMM (CNM-CSIC), Isaac Newton 8, P.T.M. 28760 Madrid, Spain
The chemical nature of the different interfaces and possible segregation effects are studied in fully epitaxial Fe/MgO/Fe (001) oriented heterostructures fabricated by combined sputtering plus laser ablation deposition techniques. Auger electron spectroscopy depth profiling experiments showed that the interfaces of the MgO spacer with the Fe layers are different, the inner MgO/Fe being spatially broader and with an FeO interlayer, while that of the outer Fe/MgO is spatially narrower with no evidence of FeO formation. This spatial and chemical asymmetry is interpreted in terms of the different deposition procedures, which affect the formation of both interfaces. No Fe segregation in the MgO layers or MgO segregation in the Fe films is observed.
2009-11-24T11:30:45Z
2009-11-24T11:30:45Z
2005-01-14
artículo
Journal of Applied Physics 97, 036104 (2005)
0021-8979
http://hdl.handle.net/10261/18963
10.1063/1.1847718
eng
http://link.aip.org/link/?JAPIAU/97/036104/1
http://dx.doi.org/10.1063/1.1847718
openAccess
American Institute of Physics