Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing

Dunz M, Schmalhorst J-M, Meinert M (2018)
AIP ADVANCES 8(5): 5.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
We report an exchange bias of more than 2700 Oe at room temperature in MnN/CoFe bilayers after high-temperature annealing. We studied the dependence of exchange bias on the annealing temperature for different MnN thicknesses in detail and found that samples with t(MnN) > 32nm show an increase of exchange bias for annealing temperatures higher than T-A = 400 degrees C. Maximum exchange bias values exceeding 2000 Oe with reasonably small coercive fields around 600 Oe are achieved for t(MnN) = 42, 48 nm. The median blocking temperature of those systems is determined to be 180 degrees C after initial annealing at T-A = 525 degrees C. X-ray diffraction measurements and Auger depth profiling show that the large increase of exchange bias after high-temperature annealing is accompanied by strong nitrogen diffusion into the Ta buffer layer of the stacks. (c) 2017 Author(s).
Erscheinungsjahr
2018
Zeitschriftentitel
AIP ADVANCES
Band
8
Ausgabe
5
Art.-Nr.
5
Konferenz
62nd Annual Conference on Magnetism and Magnetic Materials (MMM)
Konferenzort
Pittsburgh, PA
ISSN
2158-3226
Page URI
https://pub.uni-bielefeld.de/record/2919041

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Dunz M, Schmalhorst J-M, Meinert M. Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing. AIP ADVANCES. 2018;8(5): 5.
Dunz, M., Schmalhorst, J. - M., & Meinert, M. (2018). Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing. AIP ADVANCES, 8(5), 5. doi:10.1063/1.5006551
Dunz, M., Schmalhorst, J. - M., and Meinert, M. (2018). Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing. AIP ADVANCES 8:5.
Dunz, M., Schmalhorst, J.-M., & Meinert, M., 2018. Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing. AIP ADVANCES, 8(5): 5.
M. Dunz, J.-M. Schmalhorst, and M. Meinert, “Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing”, AIP ADVANCES, vol. 8, 2018, : 5.
Dunz, M., Schmalhorst, J.-M., Meinert, M.: Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing. AIP ADVANCES. 8, : 5 (2018).
Dunz, Mareike, Schmalhorst, Jan-Michael, and Meinert, Markus. “Enhanced exchange bias in MnN/CoFe bilayers after high-temperature annealing”. AIP ADVANCES 8.5 (2018): 5.