The Crystal Structure of the Laves Phase in Mg-Zn-Ag-System. I

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概要

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• A semi-binary Laves phase compound 92.5mol% MgZn_2-7.5mol% MgAg_2 was examined by the X-ray method. A structural principle of the Laves phases is at first discussed generally on the basis of layer stacking. Although there are six fundamental layers of A, A', B, B', C and C' in the Laves phases, layer sequences can be deduced from the same principle derived by Patterson and Kasper (International Table for X-ray Crystallography, Vol. II) as in the case of the closest packing of spheres. Using this principle the crystal structure of the compound is determined. It is hexagonal and belongs to the P6_3/mmc space group, with 20 formula units in the cell of the dimensions with a = 5.22 and c = 42.95Å. The structure is expressed by a 10-layer sequence such as ABC' BCA' C' BC' B' among 16 possible sequences. Atomic parameters are given on the basis of the above sequence. Relation between structures previously found and a new one is also discussed.

• 社団法人日本物理学会の論文
• 1967-08-05

著者

• Komura Yukitomo

  Department of Materials Science, Faculty of Science Hiroshima University

• Komura Yukitomo

  Department Of Materials Science Faculty Of Science Hiroshima University

• Komura Yukitomo

  Department Of Physics Faculty Of Science Osaka City University:(present)faculty Of Science Hiroshima

• KISHIDA Etuko

  Department of Physics, Faculty of Science, Osaka City University

• INOUE Mineji

  Department of Physics, Faculty of Science, Osaka City University

• Inoue Mineji

  Department Of Physics Faculty Of Science Osaka City University

• Kishida Etuko

  Department Of Physics Faculty Of Science Osaka City University

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• Analysis of Crystal Structure of an Y-Ba-Cu Oxide
• The Crystal Structure of the Laves Phase in Mg-Zn-Ag-System. I
• Thermal Expantion of the Intermetallic Compound MgNi_2
• Polytypes and Intergrowth of the Intermetallic Compounds Sm_2Ni_7

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