Ma. Leawilson et al., ELECTRON-SPIN-RESONANCE OF THE R4 W6 DEFECT IN IRRADIATED DIAMOND/, Philosophical magazine. B. Physics of condensed matter. Structural, electronic, optical and magnetic properties, 72(1), 1995, pp. 81-89
Optical and electron spin resonance (ESR) measurements have been made
on a type IIa diamond, electron irradiated at room temperature and iso
chronally annealed to high temperatures. It was found that the ESR cen
tre R4/W6 formed when the vacancy becomes mobile. Evidence supporting
a divacancy model for R4/W6 is presented.