SRT research of the crystal defects on the TGT synthesized diamond doped with boron and phosphorus
Crystal defects of two synthesized diamonds doped with boron and phosphorus are compared by synchrotron radiation topography(SRT).The crystal defects in the specimen are mainly dislocations.The dislocations are assembled in bundles in the cone-shape and distributed in the directions approximately towards to 〈112〉 and 〈111〉.The Burgers vectors of most of the dislocations are parallel to 202 and oblique to the dislocations,showing that the dislocations are of mixed type.The features of the crystal defects are quite different in several aspects compared with the diamonds without phosphorous doping.The ionic radius of phosphorous is 118.75 percent larger than that of carbon and intensive distortion may occur near the phosphorous ions.The dislocations thus originated in bundles to release the stress caused by the phosphorous doping.
W L Yu X P Jia Q X Yuan W X Huang
Yanshan Univ,State Key Lab Metastable Mat Sci & Technol,Qinhuangdao 066004,PR China National Lab of Superhard Materials,Jilin University,Changchun 130012,PR China Institute of High Energy Physics,Beijing 100039,PR China
国际会议
三亚
英文
1-5
2017-11-18（万方平台首次上网日期，不代表论文的发表时间）