In this thesis we present experimental data showing enhancements of critical currentthrough ferromagnetic Josephson junctions. Previous work in our group has shown promising results using ferromagnets with perpendicular magnetic anisotropy (PMA) as one of the magnetic layers in Josephson junctions. Magnetic characterization has shown that these PMA layers have strong out of plane magnetization. In this work we use a multilayer of palladium and cobalt as the PMA layer. By depositing the PMA layer as the central ferromagnet in between two other ferromagnets we are able to generate long range spin triplet supercurrent. There are both benefits and drawbacks with spin triplet supercurrent when compared to spin singlet supercurrent. We present a method used to confirm the presence of spin-triplet supercurrent generation from an S-type superconductor. We also compare the magnitude of the spin-triplet supercurrent in our junctions with the supercurrent in similar junctions where the central PMA layer is configured as a synthetic antiferromagnet. Finally we show data from phase sensitive measurements where we have fabricated a device with two Josephson junctions that can each be in one of two phases, either a 0 or π state. This last set of data shows switches of phase in Josephson junctions that are controlled by an external magnetic field, which can have applications in cryogenic memory.
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