摘要
A new modulated structure consisting of periodic(1120) stacking faults(SFs) in the α-Fe2O3nanowires(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 Fe2O3structure is proposed to simulate the modulated structure.HRTEM simulation results confirm that the modulated structure in α-Fe2O3NWs is caused by SFs.
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 （3500） interplanar spacing and can be described by a shift of every ten （3500） planes with 1/2 the interplanar spacing of the （1120） plane. An atomic model for the Fe203 structure is proposed to simulate the modulated structure. HRTEM simulation results confirm that the modulated structure in α-Fe2O3 NWs is caused by SFs.
基金
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
