Exchange bias in zinc-blende CrTe–MnTe bilayer

Bi, J. F.; Lu, H.; Sreenivasan, M. G.; Teo, K. L.
June 2009
Applied Physics Letters;6/22/2009, Vol. 94 Issue 25, p252504
Academic Journal
We have studied the exchange bias at the ferromagnetic (FM)/antiferromagnetic interface in the zinc-blende transition-metal chalcogenides, CrTe (5 nm)/MnTe(40 nm) bilayer grown on GaAs (100) substrate by molecular-beam epitaxy. A negative exchange bias shift in the hysteresis loop is observed when the bilayer is cooled in the applied magnetic field. The temperature-dependent remanent magnetization shows a clear enhancement of the Curie temperature and magnetization in the bilayer as compared to a single FM layer. The effects of temperature, cooling field, and angular dependence on the exchange bias have been investigated.


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