Study of the Incommensurate Two-Dimensional Antiphase Structure of Au_<3+>Zn by High Voltage,High Resolution Electron Microscopy
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The Au -Zn alloys with the incommensurate two-dimensional antiphase struc-ture of Cu.Pd-type, containing 15.3 to 18.9 at. %Zn, were investigated by highresolution structure imaging and electron diffraction methods with a 1000 kVelectron microscope, and "domain-like" atomic arrangement was revealed forthe 17.2, 17.6 and 18.3 at.'%Zn alloys. Two types of "domains" with the sameunit cell size of 6a x 5c but different configurations, which are the derivatives ofthe Cu.Pd-type structure, occur by turns along the [1003 and [0013 directions. Theshape of the "domains" and the distances between them change with composition,and the relative configuration of "domains" produces the incommensuratestructures, which explain well all the superlattice spots observed on the electrondiffraction patterns.
- 社団法人日本物理学会の論文
- 1982-07-15
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