Microstrain in Nanocrystalline Copper by High Resolution Electron Microscopy

武汉理工大学学报-材料科学版(英文版), 2009, 24(4): 528-532. doi: 10.1007/s11595-009-4528-4

^1, , ^2, , ^3,

1.Key Laboratory of Acoustic & Photonic Material and Device, Ministry of Education, Department of Physics, Wuhan University, Wuhan 430072, China;Centre for Electron Microscopy, Wuhan University, Wuhan 430072, China

2.Colloge of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

3.Key Laboratory of Acoustic & Photonic Material and Device, Ministry of Education, Department of Physics, Wuhan University, Wuhan 430072, China;Centre for Electron Microscopy, Wuhan University, Wuhan 430072, China

基金项目: the National Natural Science Foundation of China(50171048)

Microstrain in Nanocrystalline Copper by High Resolution Electron Microscopy

MIN Changping ^1, , RUAN Xuefeng ^2, , ZOU Huamin ^3,

2.Colloge of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

Keywords： nanocrystal

The elastic microstrains in a crystallite of electrodeposited nanocrystalline copper were investigated by analyzing the high resolution electron microscopy(HRTEM)image.The mi-crostrain was considered as consisting of two parts,in which the uniform part was determined with fast Fourier transformation of the HRTEM image,while the non-uniform part of the microstrain in the crystallite was measured by means of peak finding.Atomic column spacing measurements show that the crystal lattice is contracted in the longitudinal direction,while expanded in the transverse direction of the elliptical crystallite,indicating that the variation of microstrain exists mainly near the grain boundary.

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Microstrain in Nanocrystalline Copper by High Resolution Electron Microscopy

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