A new EPR center having C2v symmetry and S=1, labeled as Si-PK3, has been observed for the first time in neutron-irradiated FZ-silicon. The spectra start to appear after 150℃ annealing and disappear at 500℃. The pri...A new EPR center having C2v symmetry and S=1, labeled as Si-PK3, has been observed for the first time in neutron-irradiated FZ-silicon. The spectra start to appear after 150℃ annealing and disappear at 500℃. The principal values of tensor g and D are determined. The microscopic model is proposed to be a trivacancy chain along the 〈110〉-direction with an oxygen atom situated in the middle. The annealing temperature of si-PK3 in hydrogencontaining samples is at least by 150℃ lower than that of other samples.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘A new EPR center having C2v symmetry and S=1, labeled as Si-PK3, has been observed for the first time in neutron-irradiated FZ-silicon. The spectra start to appear after 150℃ annealing and disappear at 500℃. The principal values of tensor g and D are determined. The microscopic model is proposed to be a trivacancy chain along the 〈110〉-direction with an oxygen atom situated in the middle. The annealing temperature of si-PK3 in hydrogencontaining samples is at least by 150℃ lower than that of other samples.
