Fig. 3
Temperature dependence of the magnetization and current control of the higher-order Slonczewski modes. a Temperature dependence of MS where the blue data points are CryoFMR measurements on unpatterned areas of the MTJ wafer, the black solid line is a Bloch law fit to these data points, and the red triangles are the extracted values for MS from fits to the data in Fig. 2a–f placed on the extrapolated part of the Bloch law. The corresponding temperatures are plotted vs. STNO current in the inset together with a fitted parabola, fixed at room temperature for zero current. The error bars are calculated using the standard error method while fitting the dispersion (f vs. H) to Kittle equation in order to extract MS (b) PSD vs. drive current for another sample with the same nominal size at θex = 88° and μ0Hex = 1.6 T
