On the role of Ta cap in the recrystallization process of CoFeB layers

Bouchikhaoui H, Stender P, Akemeier D, Baither D, Hono K, Hütten A, Schmitz G (2013)
Applied Physics Letters 103(14): 142412.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
To understand the role of Ta capping on the tunneling magnetoresistance of CoFeB/MgO/CoFeB tunnel junctions, we performed an atom probe study on model CoFeB/Ta junctions. In as-prepared state, CoFeB exhibits chemically and structurally homogeneous amorphous structure. The nanoanalysis demonstrates that B segregation to the Ta cap enforces crystallization to start at the opposite interface towards the MgO barrier and so warrants the correct orientation relation. Carrying out isothermal and isochronal heat treatments, the diffusion coefficient of Boron in amorphous CoFeB could be determined. (C) 2013 AIP Publishing LLC.
Erscheinungsjahr
Zeitschriftentitel
Applied Physics Letters
Band
103
Zeitschriftennummer
14
Seite
142412
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Bouchikhaoui H, Stender P, Akemeier D, et al. On the role of Ta cap in the recrystallization process of CoFeB layers. Applied Physics Letters. 2013;103(14):142412.
Bouchikhaoui, H., Stender, P., Akemeier, D., Baither, D., Hono, K., Hütten, A., & Schmitz, G. (2013). On the role of Ta cap in the recrystallization process of CoFeB layers. Applied Physics Letters, 103(14), 142412. doi:10.1063/1.4824033
Bouchikhaoui, H., Stender, P., Akemeier, D., Baither, D., Hono, K., Hütten, A., and Schmitz, G. (2013). On the role of Ta cap in the recrystallization process of CoFeB layers. Applied Physics Letters 103, 142412.
Bouchikhaoui, H., et al., 2013. On the role of Ta cap in the recrystallization process of CoFeB layers. Applied Physics Letters, 103(14), p 142412.
H. Bouchikhaoui, et al., “On the role of Ta cap in the recrystallization process of CoFeB layers”, Applied Physics Letters, vol. 103, 2013, pp. 142412.
Bouchikhaoui, H., Stender, P., Akemeier, D., Baither, D., Hono, K., Hütten, A., Schmitz, G.: On the role of Ta cap in the recrystallization process of CoFeB layers. Applied Physics Letters. 103, 142412 (2013).
Bouchikhaoui, H., Stender, P., Akemeier, Dieter, Baither, D., Hono, K., Hütten, Andreas, and Schmitz, G. “On the role of Ta cap in the recrystallization process of CoFeB layers”. Applied Physics Letters 103.14 (2013): 142412.