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. 2016 Jun 14;6:27774. doi: 10.1038/srep27774

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(a) Saturation magnetization determined from magnetization versus applied out-of-plane field hysteresis loops; (b) effective anisotropy field determined from ferromagnetic resonance frequency versus applied out-of-plane magnetic field and (c) anisotropy energy evaluated from (a,b) results. All solid markers represent samples containing 16 bilayer repeats of Co_x|Ni_y (x,y are layer thicknesses in nm), with the unfilled round marker representing the sample consisting of 4 bilayers of Co_0.15|Ni_0.6.