Abstract
We present a systematic investigation on the effects of interlayer coupling on the magnetoresistance (MR) behavior of Ni80Fe20/Ru(\( t_{Ru}\)/Ni80Fe20 trilayer nanostripes (NSs) as a function of temperature T . By changing \( t_{Ru}\) from 0.8 nm to 1.7 nm, either a ferromagnetic or an antiferromagnetic (AFM) type of interlayer coupling was achieved, leading to a markedly different MR behavior. We observed that the MR response is a superimposition of AMR and GMR effects, and it is significantly dependent on temperature. For AFM coupled NSs, there is a transition from a pure AFM state to a reversed spin-flop phase due to enhanced ferromagnetic pin-hole coupling at low T. Our experimental results are in good agreement with micromagnetic simulations.
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Lupo, P., Liu, X.M. & Adeyeye, A.O. Magnetoresistance behavior of Ni80Fe20/Ru/Ni80Fe20 nanostripes. Eur. Phys. J. Plus 130, 125 (2015). https://doi.org/10.1140/epjp/i2015-15125-2
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DOI: https://doi.org/10.1140/epjp/i2015-15125-2