Giant perpendicular exchange bias with antiferromagnetic MnN

Zilske P, Graulich D, Dunz M, Meinert M (2017)
APPLIED PHYSICS LETTERS 110(19): 192402.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We investigated an out-of-plane exchange bias system that is based on the antiferromagnet MnN. Polycrystalline, highly textured film stacks of Ta/MnN/CoFeB/MgO/Ta were grown on SiOx by (reactive) magnetron sputtering and studied by x-ray diffraction and Kerr magnetometry. Nontrivial modifications of the exchange bias and the perpendicular magnetic anisotropy were observed as functions of both film thicknesses and field cooling temperatures. In optimized film stacks, a giant perpendicular exchange bias of 3600Oe and a coercive field of 350 Oe were observed at room temperature. The effective interfacial exchange energy is estimated to be J(eff) = 0.24 mJ/m(2) and the effective uniaxial anisotropy constant of the antiferromagnet is K-eff = 24 kJ/m(3). The maximum effective perpendicular anisotropy field of the CoFeB layer is H-ani = 3400 Oe. These values are larger than any previously reported values. These results possibly open a route to magnetically stable, exchange biased perpendicularly magnetized spin valves. Published by AIP Publishing.
Erscheinungsjahr
Zeitschriftentitel
APPLIED PHYSICS LETTERS
Band
110
Zeitschriftennummer
19
Artikelnummer
192402
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Zilske P, Graulich D, Dunz M, Meinert M. Giant perpendicular exchange bias with antiferromagnetic MnN. APPLIED PHYSICS LETTERS. 2017;110(19): 192402.
Zilske, P., Graulich, D., Dunz, M., & Meinert, M. (2017). Giant perpendicular exchange bias with antiferromagnetic MnN. APPLIED PHYSICS LETTERS, 110(19), 192402. doi:10.1063/1.4983089
Zilske, P., Graulich, D., Dunz, M., and Meinert, M. (2017). Giant perpendicular exchange bias with antiferromagnetic MnN. APPLIED PHYSICS LETTERS 110:192402.
Zilske, P., et al., 2017. Giant perpendicular exchange bias with antiferromagnetic MnN. APPLIED PHYSICS LETTERS, 110(19): 192402.
P. Zilske, et al., “Giant perpendicular exchange bias with antiferromagnetic MnN”, APPLIED PHYSICS LETTERS, vol. 110, 2017, : 192402.
Zilske, P., Graulich, D., Dunz, M., Meinert, M.: Giant perpendicular exchange bias with antiferromagnetic MnN. APPLIED PHYSICS LETTERS. 110, : 192402 (2017).
Zilske, P., Graulich, D., Dunz, Mareike, and Meinert, Markus. “Giant perpendicular exchange bias with antiferromagnetic MnN”. APPLIED PHYSICS LETTERS 110.19 (2017): 192402.