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Anwar, M.S. (author), Czeschka, F. (author), Hesselberth, M. (author), Porcu, M. (author), Aarts, J. (author)We report on measurements of supercurrents through the half-metallic ferromagnet CrO2 grown on hexagonal Al2O3 (sapphire). The current was observed to flow over a distance of 700 nm between two superconducting amorphous Mo70Ge30 electrodes which were deposited on the CrO2 film. The critical current Ic increases as function of decreasing...journal article 2010