Berlin 2015 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 54: Magnetic Coupling Phenomena

MA 54.2: Vortrag

Freitag, 20. März 2015, 09:45–10:00, EB 301

Large exchange bias in epitaxial MnN/CoFe bilayers — Jan Balluff, Mareike Dunz, and •Markus Meinert — Center for Spinelectronic Materials and Devices, Physics Department, Bielefeld University, Germany

MnN is an antiferromagnet with a high Neel temperature and thus seems promising for exchange bias applications [1]. We investigated epitaxial MnN/CoFe film stacks grown on MgO(001) for their magnetic properties. We observed large exchange bias reaching up to 1000 Oe at room temperature. MnN film thickness, working pressure and deposition temperature dependencies of the exchange bias and the coercive field were studied in detail. Our results suggest that the MnN/CoFe system may become a substitute for the common IrMn or PtMn based exchange bias systems.

[1] Suzuki, K., Yamaguchi, Y., Kaneko, T., Yoshida, H., Obi, Y., Fujimori, H., and Morita, H. (2001). Journal of the Physical Society of Japan, 70(4), 1084-1089.