Artikel,

Influence of interface structure on the tunnelling spin polarization of CoFeB alloys

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Journal of Physics D: Applied Physics, 40 (5): 1234-1237 (2007)

Zusammenfassung

We present measurements of tunnelling spin polarization (TSP) of CoFeB alloys in Al/AlOx/CoFeB tunnel junctions using superconducting tunnelling spectroscopy. We observe that though Co72Fe20B8 (at.\%) layers crystallize in the fcc structure, in junctions annealed above 300 $^\circ$C the measured TSP degrades, indicating that in these junctions the TSP of amorphous CoFeB is higher than its crystalline counterpart.

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