Electron spin resonance (ESR) study of the germanium related paramagnetic defect in the suSphur-rich Ge-S bulk glasses

摘要

Arai and Namikawa [1] discovered the intrinsic paramagnetic defects in the bulk glassy system GevS100-x (20 =s x ss 42.55) in 1973. Great attention has been paid to this topic since especially as only the Ge-S glassy system exhibits so-called dark (not light or y-radiation induced) stable intrinsic paramagnetic defects even at temperatures close to the glass transition temperature Tg, in contrast to a number of chalcogenide glasses e.g. Ge-Se, As-S, As-Se.