Preparation of "natural" diamonds by HPHT annealing of synthetic diamonds

被引：44

作者：

Fang, Chao ^{[1
]}

Zhang, Yuewen ^{[1
]}

Zhang, Zhuangfei ^{[1
]}

Shan, Chongxin ^{[1
]}

Shen, Weixia ^{[1
]}

Jia, Xiaopeng ^{[1
,2
]}

机构：

[1] Zhengzhou Univ, Sch Phys Engn, Zhengzhou 450052, Henan, Peoples R China

[2] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Jilin, Peoples R China

来源：

CRYSTENGCOMM | 2018年 / 20卷 / 04期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

SINGLE-CRYSTAL DIAMOND; HIGH-NITROGEN CONCENTRATION; HIGH-PRESSURE; HIGH-TEMPERATURE; GROWTH; CRYSTALLIZATION; AGGREGATION; HYDROGEN; SYSTEM; CATALYST;

D O I：

10.1039/c7ce02013a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, IIa, Ib, N-doped and N-H co-doped diamonds were studied, and the interaction mechanisms between hydrogen and nitrogen in the diamonds were investigated in detail. The results show that the degree of nitrogen aggregation in the {111} face is higher than that in the {100} face. The N-doped and N-H co-doped crystals exhibit an obvious color difference between the {100} and {111} faces within the same crystal after annealing. The existence of hydrogen is favorable for the aggregation of nitrogen atoms from C-centers to A-centers and B-centers in diamonds. By annealing N-H co-doped diamonds, hydrogen-doped IaA+B type synthetic "natural" diamonds were obtained.

引用

页码：505 / 511

页数：7

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