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Giblin","submitted_at":"2015-11-25T16:26:47Z","abstract_excerpt":"The magnetism in the ferromagnetic superconductor UCoGe has been studied using a combination of magnetic Compton scattering, bulk magnetization, X-ray magnetic circular dichroism and electronic structure calculations, in order to determine the spin and orbital moments. The experimentally observed total spin moment, $M_s$, was found to be -0.24 $\\pm$ 0.05~$\\mu_B$ at 5~T. By comparison with the total moment of 0.16 $\\pm$ 0.01~$\\mu_B$, the orbital moment, $M_l$, was determined to be 0.40 $\\pm$ 0.05~$\\mu_B$. The U and Co spin moments were determined to be antiparallel. 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