Evidence of a barrier oxidation dependence on the interfacialmagnetism in co/alumina based magnetic tunnel junctions

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Soft x-ray absorption spectroscopy and magnetic circular dichroism at the Co L{sub 2,3} edge have been applied to explore the near-interfacial magnetism of Co electrodes in Co/alumina based magnetic tunnel junctions. By taking into account the formation of CoO at the FM/barrier interface, the change in the total magnetic moment on metallic Co atoms as a function of barrier oxidation has been determined. The results demonstrate a strong correlation between the Co moments and measured TMR values, and an enhancement in the Co moments for moderate oxidation times.

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Telling, N.D.; van der Laan, G.; Ladak, S.; Hicken, R.J. & Arenholz, E. September 29, 2005.

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Description

Soft x-ray absorption spectroscopy and magnetic circular dichroism at the Co L{sub 2,3} edge have been applied to explore the near-interfacial magnetism of Co electrodes in Co/alumina based magnetic tunnel junctions. By taking into account the formation of CoO at the FM/barrier interface, the change in the total magnetic moment on metallic Co atoms as a function of barrier oxidation has been determined. The results demonstrate a strong correlation between the Co moments and measured TMR values, and an enhancement in the Co moments for moderate oxidation times.

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  • 50th Annual Conference on Magnetism and MagneticMaterials, San Jose, CA, Oct. 30-Nov. 3, 2005

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  • Report No.: LBNL--58509
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 862019
  • Archival Resource Key: ark:/67531/metadc793871

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  • September 29, 2005

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  • Dec. 19, 2015, 7:14 p.m.

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Telling, N.D.; van der Laan, G.; Ladak, S.; Hicken, R.J. & Arenholz, E. Evidence of a barrier oxidation dependence on the interfacialmagnetism in co/alumina based magnetic tunnel junctions, article, September 29, 2005; United States. (digital.library.unt.edu/ark:/67531/metadc793871/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.