Structural Properties of Co and CoFe Electrodes Forming a Magnetic Tunnel Junction

• Authors: L. Gładczuk , P. Pankowski , W. Paszkowicz , P. Dłużewski , M. Wójcik , P. Przysłupski
• Languages of publication: EN

Abstracts

EN

The M_1/MgO/M_2 trilayer tunnel magnetoresistance systems are studied by means of X-ray diffraction, NMR, and transmission electron microscopy techniques. As M_1 and M_2 electrodes we used Co, Fe, and CoFe layers. The growth mechanism and structural quality of both electrodes and of the epitaxial MgO barrier forming the magnetic tunnel junctions are experimentally examined. It is shown that the crystallographic coherence of magnetic tunnel junctions across the MgO barrier is significantly disturbed by imperfect crystal structure of magnetic electrodes. The NMR results indicate a difference in short-range order between bottom and top electrodes.

Keywords

EN

81.15.Hi; 68.65.Ac; 61.10.Nz; 76.60.Lz; 68.37.Lp

Discipline

• 68.37.Lp: Transmission electron microscopy (TEM)
• 81.15.Hi: Molecular, atomic, ion, and chemical beam epitaxy
• 76.60.Lz: Spin echoes
• 68.65.Ac: Multilayers

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 1
• Pages: 135-140

Dates

published

2007-01

received

2006-09-04

Contributors

author

L. Gładczuk

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

P. Pankowski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

W. Paszkowicz

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

P. Dłużewski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

M. Wójcik

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

P. Przysłupski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.111.135