HRTEM STUDY ON CRYSTAL STRUCTURE OF Zr_4Co_4Si_7 COMPOUND
MAO Jian.fu;HE Liantong;YE Hengqiang(Laboratory of Atomic Imaging of Solids;Ihstitute of Metal Research;Chinese Academy of Sciences;Shenyang 110015) YANG Dezhuang;TANG Zhixiu(Harbin Institute of Technotogy;Harbin 150001)(Manuscript received 1994-07-05;in revised form 1995-02-24)
Cite this article:
MAO Jian.fu;HE Liantong;YE Hengqiang(Laboratory of Atomic Imaging of Solids;Ihstitute of Metal Research;Chinese Academy of Sciences;Shenyang 110015) YANG Dezhuang;TANG Zhixiu(Harbin Institute of Technotogy;Harbin 150001)(Manuscript received 1994-07-05;in revised form 1995-02-24). HRTEM STUDY ON CRYSTAL STRUCTURE OF Zr_4Co_4Si_7 COMPOUND. Acta Metall Sin, 1995, 31(7): 289-293.
Abstract A study of the crystal structure of V-phase is preformed on Zr4Co4Si7 compound by means of various electron microscopic techniques.Results of electron diffraction analysis show that Zr_4Co_4Si_7 has a body -centered tetragonal structure with space group I4/mmm.Images taken by a high resolution transmission electron microscope(HRTEM) reveal the structure in atomic level.Big bright spots in [001] HRTEM image represent Ge-centered square antiprism columns,and the eight small bright spots around them represent Co-centered octahedron columns.Good agreement between the observed and simulated images has been obtained and thus confirmed the results proposed earlier by X-ray diffraction analysis.correspondent:MAO Jian fu,postdoctor,(Laboratory,of Atomic Imaginq of Solidy,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110015)
