中国物理B ›› 2013, Vol. 22 ›› Issue (10): 107401-107401.doi: 10.1088/1674-1056/22/10/107401

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

A new modulated structure in α-Fe2O3 nanowires

蔡鎔声a, 商蕾a, 刘雪华a b, 王乙潜a, 袁露c, 周光文c   

  1. a The Cultivation Base for State Key Laboratory, Qingdao University, Qingdao 266071, China;
    b Laboratory of Advanced Materials and Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    c Department of Mechanical Engineering & Multidisciplinary Program in Materials Science and Engineering, State University of New York, Binghamton, NY 13902, USA
  • 收稿日期:2013-03-18 修回日期:2013-04-27 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported by the National Key Basic Research Development Program of China (Grant No. 2012CB722705), the Natural Science Foundation for Outstanding Young Scientists in Shandong Province, China (Grant No. JQ201002), the Program for Foreign Cultural and Educational Experts (Grant No. 20123702083), the Program for Higher Education Science and Technology in Shandong Province (Grant No. J12LA17). Wang Yi-Qian would like to thank the financial support from Taishan Outstanding Overseas Scholar Program of Shandong Province, China.

A new modulated structure in α-Fe2O3 nanowires

Cai Rong-Sheng (蔡鎔声)a, Shang Lei (商蕾)a, Liu Xue-Hua (刘雪华)a b, Wang Yi-Qian (王乙潜)a, Yuan Lu (袁露)c, Zhou Guang-Wen (周光文)c   

  1. a The Cultivation Base for State Key Laboratory, Qingdao University, Qingdao 266071, China;
    b Laboratory of Advanced Materials and Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    c Department of Mechanical Engineering & Multidisciplinary Program in Materials Science and Engineering, State University of New York, Binghamton, NY 13902, USA
  • Received:2013-03-18 Revised:2013-04-27 Online:2013-08-30 Published:2013-08-30
  • Contact: Wang Yi-Qian E-mail:yqwang@qdu.edu.cn
  • Supported by:
    Project supported by the National Key Basic Research Development Program of China (Grant No. 2012CB722705), the Natural Science Foundation for Outstanding Young Scientists in Shandong Province, China (Grant No. JQ201002), the Program for Foreign Cultural and Educational Experts (Grant No. 20123702083), the Program for Higher Education Science and Technology in Shandong Province (Grant No. J12LA17). Wang Yi-Qian would like to thank the financial support from Taishan Outstanding Overseas Scholar Program of Shandong Province, China.

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摘要： A new modulated structure consisting of periodic (1120) stacking faults (SFs) in the α-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 (3300) interplanar spacing and can be described by a shift of every ten (3300) planes with 1/2 the interplanar spacing of the (1120) plane. An atomic model for the Fe2O3 structure is proposed to simulate the modulated structure. HRTEM simulation results confirm that the modulated structure in α-Fe2O3 NWs is caused by SFs.

关键词: crystal structure, nanocrystalline materials, electron microscopy, simulation and modeling

Abstract: A new modulated structure consisting of periodic (1120) stacking faults (SFs) in the α-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 (3300) interplanar spacing and can be described by a shift of every ten (3300) planes with 1/2 the interplanar spacing of the (1120) plane. An atomic model for the Fe2O3 structure is proposed to simulate the modulated structure. HRTEM simulation results confirm that the modulated structure in α-Fe2O3 NWs is caused by SFs.

Key words: crystal structure, nanocrystalline materials, electron microscopy, simulation and modeling

中图分类号:  (Effects of material synthesis, crystal structure, and chemical composition)

  • 74.62.Bf
75.50.Tt (Fine-particle systems; nanocrystalline materials) 87.64.Ee (Electron microscopy) 61.43.Bn (Structural modeling: serial-addition models, computer simulation)