Abstract
The electronic structure of light rare earth impurities (Pr, Nd and Pm) in 5d-metals (Ir and Ta) is studied theoretically by means of a supercell approximation. For Pr in Ir a non-magnetic state is calculated to be stable, while the other impurity-host combinations give spin-polarized states. For Pm in Ir and Ta an almost complete spin-polarization is obtained. The results are compared with experiment and a qualitative agreement is found.
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