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

P.V. Paluskar; J.T. Kohlhepp; H.J.M. Swagten; B. Koopmans; R. Wolters; H. Boeve; E. Snoeck

doi:10.1088/0022-3727/40/5/S04

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

P.V. Paluskar, J.T. Kohlhepp, H.J.M. Swagten, B. Koopmans, R. Wolters, H. Boeve, E. Snoeck

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Abstract

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 DegC the measured TSP degrades, indicating that in these junctions the TSP of amorphous CoFeB is higher than its cryst. counterpart.

Original language	English
Pages (from-to)	1234-1237
Journal	Journal of Physics D: Applied Physics
Volume	40
Issue number	5
DOIs	https://doi.org/10.1088/0022-3727/40/5/S04
Publication status	Published - 2007

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title = "Influence of interface structure on the tunnelling spin polarization of CoFeB alloys",

abstract = "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 DegC the measured TSP degrades, indicating that in these junctions the TSP of amorphous CoFeB is higher than its cryst. counterpart.",

author = "P.V. Paluskar and J.T. Kohlhepp and H.J.M. Swagten and B. Koopmans and R. Wolters and H. Boeve and E. Snoeck",

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AU - Paluskar, P.V.

AU - Kohlhepp, J.T.

AU - Swagten, H.J.M.

AU - Koopmans, B.

AU - Wolters, R.

AU - Boeve, H.

AU - Snoeck, E.

PY - 2007

Y1 - 2007

N2 - 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 DegC the measured TSP degrades, indicating that in these junctions the TSP of amorphous CoFeB is higher than its cryst. counterpart.

AB - 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 DegC the measured TSP degrades, indicating that in these junctions the TSP of amorphous CoFeB is higher than its cryst. counterpart.

U2 - 10.1088/0022-3727/40/5/S04

DO - 10.1088/0022-3727/40/5/S04

M3 - Article

SN - 0022-3727

VL - 40

SP - 1234

EP - 1237

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

IS - 5

ER -

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

Abstract

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