A new modulated structure in α-Fe2O3 nanowires

被引：1

作者：

Cai Rong-Sheng ^{[1
]}

Shang Lei ^{[1
]}

Liu Xue-Hua ^{[1
,2
]}

Wang Yi-Qian ^{[1
]}

Yuan Lu ^{[3
,4
]}

Zhou Guang-Wen ^{[3
,4
]}

机构：

[1] Qingdao Univ, State Key Lab, Cultivat Base, Qingdao 266071, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Lab Adv Mat & Electron Microscopy, Beijing 100190, Peoples R China

[3] SUNY Binghamton, Dept Mech Engn, Binghamton, NY 13902 USA

[4] SUNY Binghamton, Multidisciplinary Program Mat Sci & Engn, Binghamton, NY 13902 USA

来源：

CHINESE PHYSICS B | 2013年 / 22卷 / 10期

关键词：

crystal structure; nanocrystalline materials; electron microscopy; simulation and modeling; GROWTH; OXIDATION; DEFECTS;

D O I：

10.1088/1674-1056/22/10/107401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new modulated structure consisting of periodic (11 (2) over bar0) stacking faults (SFs) in the alpha-Fe2O3 nanowires (NWs) formed by the thermal oxidation of Fe foils is reported, using a combination of high-resolution transmission electron microscopy (HRTEM) observations and HRTEM image simulations. The periodicity of the modulated structure is 1.53 nm, which is ten times (3 (3) over bar 00) interplanar spacing and can be described by a shift of every ten (3 (3) over bar 00) planes with 1/2 the interplanar spacing of the (11 (2) over bar0) plane. An atomic model for the Fe2O3 structure is proposed to simulate the modulated structure. HRTEM simulation results confirm that the modulated structure in alpha-Fe2O3 NWs is caused by SFs.

引用

页数：4

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