Corresponding relationship between characteristic birefringence, strain, and impurities in Zimbabwean mixed-habit diamonds revealed by mapping techniques

IF 1.8 3区地球科学 Q2 MINERALOGY

European Journal of Mineralogy Pub Date : 2022-11-09 DOI:10.5194/ejm-34-539-2022

Chengyang Sun, Taijin Lu, Mingyue He, Zhonghua Song, Yi Deng

{"title":"Corresponding relationship between characteristic birefringence, strain, and impurities in Zimbabwean mixed-habit diamonds revealed by mapping techniques","authors":"Chengyang Sun, Taijin Lu, Mingyue He, Zhonghua Song, Yi Deng","doi":"10.5194/ejm-34-539-2022","DOIUrl":null,"url":null,"abstract":"Abstract. Birefringence in diamond is an optical phenomenon related\nto strain and various defects in crystal lattices. Despite extensive\ninvestigations being done to characterize and quantify it, there is still\ncontroversy about its origin in diamond lattices. Here we report the\nrelationship between the distribution of birefringence patterns observed\nunder cross-polarized light, strain features analyzed by Raman mapping, and\nthe impurity characteristics revealed by Fourier transform infrared spectroscopy (FTIR) mapping in natural mixed-habit\ndiamonds. It was deduced that the plastic deformation was enhanced with\nhigher tensile residual stress, and nitrogen and VN3H defects\nwere more enriched as a result of the temperature increase during\ncrystallization, at growth bands showing straight birefringence patterns and\nthe relative enrichment of graphite inclusions. These results provided solid\ndata and insights for birefringence-related properties in diamond and\ncorrelated the occurrence of birefringence with diamond spectroscopic\nproperties, which promoted the understanding of the formation of\nbirefringence in natural diamonds and would be helpful for the synthesis of\nhigh-quality, birefringence-free diamonds.\n","PeriodicalId":11971,"journal":{"name":"European Journal of Mineralogy","volume":" ","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Mineralogy","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.5194/ejm-34-539-2022","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MINERALOGY","Score":null,"Total":0}

引用次数: 1

Abstract

Abstract. Birefringence in diamond is an optical phenomenon related to strain and various defects in crystal lattices. Despite extensive investigations being done to characterize and quantify it, there is still controversy about its origin in diamond lattices. Here we report the relationship between the distribution of birefringence patterns observed under cross-polarized light, strain features analyzed by Raman mapping, and the impurity characteristics revealed by Fourier transform infrared spectroscopy (FTIR) mapping in natural mixed-habit diamonds. It was deduced that the plastic deformation was enhanced with higher tensile residual stress, and nitrogen and VN3H defects were more enriched as a result of the temperature increase during crystallization, at growth bands showing straight birefringence patterns and the relative enrichment of graphite inclusions. These results provided solid data and insights for birefringence-related properties in diamond and correlated the occurrence of birefringence with diamond spectroscopic properties, which promoted the understanding of the formation of birefringence in natural diamonds and would be helpful for the synthesis of high-quality, birefringence-free diamonds.

查看原文本刊更多论文

用测绘技术揭示津巴布韦混合习惯钻石特征双折射、应变和杂质之间的对应关系

摘要金刚石的双折射是一种与应变和晶格中各种缺陷有关的光学现象。尽管进行了广泛的研究来表征和量化它，但关于它在金刚石晶格中的起源仍然存在争议。本文报道了在交叉偏振光下观察到的双折射模式分布、拉曼映射分析的应变特征以及傅里叶变换红外光谱(FTIR)映射揭示的天然混合金刚石中的杂质特征之间的关系。结果表明，拉伸残余应力越高，塑性变形越大，晶化过程中温度越高，氮和VN3H缺陷越富集，生长带呈现直双折射模式，石墨包裹体相对富集。这些结果为研究金刚石中与双折射相关的性质提供了坚实的数据和见解，并将双折射的发生与金刚石的光谱性质联系起来，促进了对天然金刚石中双折射形成的认识，有助于合成高质量、无双折射的金刚石。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

European Journal of Mineralogy 地学-矿物学

CiteScore

2.80

自引率

9.50%

发文量

审稿时长

6-12 weeks

期刊介绍： EJM was founded to reach a large audience on an international scale and also for achieving closer cooperation of European countries in the publication of scientific results. The founding societies have set themselves the task of publishing a journal of the highest standard open to all scientists performing mineralogical research in the widest sense of the term, all over the world. Contributions will therefore be published primarily in English. EJM publishes original papers, review articles and letters dealing with the mineralogical sciences s.l., primarily mineralogy, petrology, geochemistry, crystallography and ore deposits, but also biomineralogy, environmental, applied and technical mineralogy. Nevertheless, papers in any related field, including cultural heritage, will be considered.