Journal
APPLIED PHYSICS LETTERS
Volume 77, Issue 5, Pages 720-722Publisher
AMER INST PHYSICS
DOI: 10.1063/1.127097
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Superconducting Cu-doped Al films sputtered at room temperature (RT) show improved characteristics for superconductor-insulator-ferromagnet spin-polarization measurements as compared to dirty Al films evaporated at 77 K, Detailed analysis including temperature, depairing and spin-orbit effects reveal spin-polarization values for a large variety of ferromagnetic transition-metal alloys. The high-spin polarization for these RT-sputtered junctions is consistent with large tunnel magnetoresistance values observed in similarly sputtered magnetic tunnel junctions. (C) 2000 American Institute of Physics. [S0003-6951(00)03831-6].
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