Issue 4, 2018

Preparation of “natural” diamonds by HPHT annealing of synthetic diamonds

Abstract

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.

Graphical abstract: Preparation of “natural” diamonds by HPHT annealing of synthetic diamonds

Article information

Article type
Paper
Submitted
21 Nov 2017
Accepted
20 Dec 2017
First published
20 Dec 2017

CrystEngComm, 2018,20, 505-511

Preparation of “natural” diamonds by HPHT annealing of synthetic diamonds

C. Fang, Y. Zhang, Z. Zhang, C. Shan, W. Shen and X. Jia, CrystEngComm, 2018, 20, 505 DOI: 10.1039/C7CE02013A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements