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Understanding the formation of multiply twinned structure in decahedral intermetallic nanoparticles | |
Liang, Chao; Yu, Yi | |
2019-05 | |
发表期刊 | IUCRJ |
ISSN | 2052-2525 |
卷号 | 6页码:447-453 |
发表状态 | 已发表 |
DOI | 10.1107/S2052252519002562 |
摘要 | The structure of monometallic decahedral multiply twinned nanoparticles (MTPs) has been extensively studied, whereas less is known about intermetallic MTPs, especially the mechanism of formation of multiply twinned structures, which remains to be understood. Here, by using aberration-corrected scanning transmission electron microscopy, a detailed structural study of AuCu decahedral intermetallic MTPs is presented. Surface segregation has been revealed on the atomic level and the multiply twinned structure was studied systematically. Significantly different from Au and Cu, the intermetallic AuCu MTP adopts a solid-angle deficiency of -13.35 degrees, which represents an overlap instead of a gap (+7.35 degrees gap for Au and Cu). By analysing and summarizing the differences and similarities among AuCu and other existing monometallic/ intermetallic MTPs, the formation mechanism has been investigated from both energetic and geometric perspectives. Finally, a general framework for decahedral MTPs has been proposed and unknown MTPs could be predicted on this basis. |
关键词 | intermetallic nanoparticles multiple twinning disclinations aberration-corrected scanning transmission electron microscopy |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | Science Foundation of Shanghai[18ZR1425200] |
WOS研究方向 | Chemistry ; Crystallography ; Materials Science |
WOS类目 | Chemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000466861200012 |
出版者 | INT UNION CRYSTALLOGRAPHY |
WOS关键词 | STRAIN DISTRIBUTIONS ; SURFACE STRAIN ; GROWTH ; CRYSTAL ; ICOSAHEDRA ; LATTICE |
原始文献类型 | Article |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/40889 |
专题 | 物质科学与技术学院_硕士生 物质科学与技术学院_PI研究组_于奕组 |
通讯作者 | Yu, Yi |
作者单位 | Shanghaitech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China |
第一作者单位 | 物质科学与技术学院 |
通讯作者单位 | 物质科学与技术学院 |
第一作者的第一单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Liang, Chao,Yu, Yi. Understanding the formation of multiply twinned structure in decahedral intermetallic nanoparticles[J]. IUCRJ,2019,6:447-453. |
APA | Liang, Chao,&Yu, Yi.(2019).Understanding the formation of multiply twinned structure in decahedral intermetallic nanoparticles.IUCRJ,6,447-453. |
MLA | Liang, Chao,et al."Understanding the formation of multiply twinned structure in decahedral intermetallic nanoparticles".IUCRJ 6(2019):447-453. |
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