Anisotropic magnetic centres in hydrogenated microcrystalline and polymorphous silicon

Abstract Anisotropic magnetic centres in hydrogenated microcrystalline and polymorphous silicon have been observed in electron spin resonance spectra. The nature of anisotropic magnetic centres is discussed in terms of dangling bonds with axially symmetric g -values through a diagram of δ g // vs. δ g ⊥ , i.e. the g -shifts parallel and perpendicular to the symmetric axis, respectively.