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Fabrication and Characterization of Hybrid Tunnel Magnetoresistance Structures with Embedded Self-Assembled Nanoparticle Templates

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Siffalovic P., Majkova E., Chitu L., Halahovets Y., Jergel M., Senderak R., Luby S., Weis M., Satka A., Szymański B., Stobiecki F., Timmann A., Roth S.

Acta Physica Polonica A

2009

vol. 115

issue 1

332-335

We report on an incorporation of self-assembled templates of superparamagnetic Fe-O nanoparticles into tunnel magnetoresistance devices. We fabricated a multilayer stack composed of the following layer sequence: Cr/Au/Co/NP/Co/Cu on Si(100) substrate where NP stands for a self-assembled layer of nanoparticles deposited by the Langmuir-Blodgett technique. The X-ray reflectivity and grazing-incidence small angle X-ray scattering were employed to study the layers thicknesses and interface morphology in each preparation step. In particular, the grazing-incidence small angle X-ray scattering was measured before and after the nanoparticle incorporation as well as on the complete tunnel magnetoresistance stack. In this way, in-depth morphology profile during subsequent preparation steps was obtained. We demonstrate that X-ray analysis of the deposited tunnel magnetoresistance stack is essential for successful fabrication of novel hybrid devices consisting of self-assembled nanoparticles.

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1 Acta Physica Polonica A

1 2009

1 Chitu L.

1 Halahovets Y.

1 Jergel M.

1 Luby S.

1 Majkova E.

1 Roth S.

1 Satka A.

1 Senderak R.

1 Siffalovic P.

1 Stobiecki F.

1 Szymański B.

1 Timmann A.

1 Weis M.

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Fabrication and Characterization of Hybrid Tunnel Magnetoresistance Structures with Embedded Self-Assembled Nanoparticle Templates