Key points are not available for this paper at this time.
Band structure calculations using the spin-polarized ASW method were performed on the title compounds. Nonmetallic behavior is attributed to spin-polarization-induced opening of a gap at the Fermi level. Curie temperatures were calculated and found to be in reasonable agreement with the real evolution of silicon and germanium derivatives.
Siberchicot et al. (Mon,) studied this question.