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A NEW EPR DEFECT IN NEUTRON-IRRADIATED FZ-SILICON AND HYDROGEN PASSIVATION EFFECT

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【Author】 WU SHUXIANG YAN MAOXUN XU HUIYING MAO JINCHANG WU EN (Department of Physics, Peking University)

【机构】 Department of Physics； Peking University； Peking University；

【摘要】 <正> A new EPR center having C_2v 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.更多还原

【Abstract】 A new EPR center having C_2v 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.更多还原

【关键词】 annealing； disappear； irradiated； situated； annealed； microscopic； neutron； symmetry； tensor； irradiation；

【基金】 Project supported by the National Natural Science Foundation of China.

【文献出处】 Science in China,Ser.A ,中国科学A辑(英文版) , 编辑部邮箱 ,1988年01期

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