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arXiv · 1709.09928

Switching of Co magnetization driven by antiferromagnetic-ferromagnetic phase transition of FeRh alloy in Co/FeRh bilayers

P. Dróżdż·M. Ślęzak·K. Matlak·B. Matlak·K. Freindl·J. Korecki·T. Ślęzak
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Abstract

We show that Co spins in Co/FeRh epitaxial bilayers grown on W(110) switch reversibly between the two orthogonal in-plane directions as the FeRh layer undergoes temperature driven antiferromagnetic-ferromagnetic (AFM-FM) phase transition. Switching of Co magnetization is characterized by a hysteretic behavior owing to a temperature hysteresis of the AFM-FM transition in FeRh. The spin reorientation of Co is driven by the evolution interfacial exchange coupling to FeRh system across the AFM-FM process. Our results provide a new method of writing information purely by a local temperature change.

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P. Dróżdż, M. Ślęzak, K. Matlak, B. Matlak, K. Freindl, J. Korecki, T. Ślęzak. 2017-09-28. Switching of Co magnetization driven by antiferromagnetic-ferromagnetic phase transition of FeRh alloy in Co/FeRh bilayers. https://doi.org/10.1103/physrevapplied.9.034030

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