Fabrication of Highly Spin-Polarized Co2FeAl0.5Si0.5 Thin-Films


Vahidi, M., Gifford, J. A., Zhang, S. K., Krishnamurthy, S., Yu, Z. G., Yu, L., . . . Newman, N. (2014). Fabrication of highly spin-polarized Co2FeAl0.5Si0.5 thin-films. Applied Materials, 2(4), 046108.


Ferromagnetic Heusler Co2FeAl0.5Si0.5 epitaxial thin-films have been fabricated in the L21 structure with saturation magnetizations over 1200 emu/cm3. Andreev reflection measurements show that the spin polarization is as high as 80% in samples sputtered on unheated MgO (100) substrates and annealed at high temperatures. However, the spin polarization is considerably smaller in samples deposited on heated substrates.

Keywords: Magnetic properties, Magnetic ordering, Superconductivity, Point contacts, Spintronic devices, Epitaxy, Ferromagnetic materials, Thin films, Oxides, Metal oxides

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