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SQUID hysteresis loop at room temperature with out-of-plane applied field for the unpatterned sample. The magnetic moment is normalized to a surface of ; for comparison, the surfacic moment of a layer of of Co is . Inset: transmission electron microscopy (TEM) cross-section image with chemical contrast (high angle annular dark field mode).
characteristics of two nanopillars (dots), together with the Brinkman fits (lines) and barrier parameters for each.
MR of nanopillars of different sizes, relative to the zero-field resistance, as a function of the out-of-plane applied field.
Resistance and product for nanopillars of different sizes patterned from the same wafer.
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