Abstract
Spinel ferrites are auspicious for the sources of ``pure'' spin current being developed for spintronic applications, but until recently have exhibited extremely high damping, making these materials unsuitable for coherent spin-current generation. This work demonstrates efficient spin pumping across an epitaxial ferrite/Pt interface, revealing the coexistence of proximity-induced magnetism and spin pumping at these interfaces, and that pumping dominates the microwave-induced voltage. These insights highlight this class of materials as the means to devices based on pure spin currents.
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