Periodicity and atomic ordering in nanosized particles of crystals

被引：66

作者：

Petkov, Valeri ^{[1
]}

Bedford, Nick ^{[1
]}

Knecht, Marc R. ^{[2
,3
]}

Weir, Michael G. ^{[3
]}

Crooks, Richard M. ^{[2
,3
]}

Tang, Wenjie ^{[2
,3
]}

Henkelman, Graeme ^{[2
,3
]}

Frenkel, Anatoly

机构：

[1] Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA

[2] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA

[3] Yeshiva Univ, Dept Phys, New York, NY 10016 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 24期

关键词：

D O I：

10.1021/jp801195c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Evidence is presented that nanosized particles of crystals do not necessarily adopt a periodic atomic structure as their bulk counterparts do and/or as predicted by theory. As an example, 1.6-nm An particles grown inside a dendrimeric host are studied and found to possess a heavily disordered, metallic glass-type structure. The nanoparticle's structure evolves toward the face-centered-cubic-type lattice of bulk An only upon removal of solvent. The results show that periodicity, which rules the structure and properties of bulk crystals, is less of a constraint at the nanoscale level and, therefore, may be used as tunable parameter in nanotechnology research.

引用

页码：8907 / 8911

页数：5

共 27 条

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