Combined Use of Crystal Structure Imaging and Convergent Beam Electron Diffraction in Crystal Structure Determination

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  • 電子顕微鏡による結晶構造解析―結晶構造像と収束電子回折像の併用―
  • デンシ ケンビキョウ ニヨル ケッショウ コウゾウ カイセキ ケッショウ コウ

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The combination technique of crystal structure imaging and convergent beam electron diffraction (CBED) is proposed in crystal structure analysis by electron microscopy. The atom configuration can be obtained directly from the structure images projected along two or three principal axis directions. In some case, the space group can be deduced uniquely from plane group symmetries appearing in the images. But in general, the space group should be determined by selecting the point group from the symmetry of the CBED pattern. In the present paper, crystal structures of complex oxides, Bi2O3⋅2WO3, Na2O⋅9TiO2and Ca0.8Y0.2FeO2.6, are determined by the 1 MeV structure imaging and the CBED technique.

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