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ZnO 結晶の Polarity と Polar Twin


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Title: ZnO 結晶の Polarity と Polar Twin
Other Titles: Crystallographic Polarity and Polar Twin in ZnO Crystals
Authors: 岩永, 浩 / 柴田, 昇
Authors (alternative): Iwanaga, Hiroshi / Shibata, Noboru
Issue Date: 25-Dec-1970
Citation: 長崎大学教養部紀要. 自然科学. 1970, 11, p.15-23
Abstract: Crystallographic polarity in needle-shaped ZnO crystals was determined by utilizing the intensity difference between (hkl) and (hkl) Laue spots resulted from the anomalous dispersion of X-ray near the K absorption edge wave length of Zn atom. The polarity obtained agrees with the one determined by the difference in etching behavior on the cleaved surfaces of the crystal. X-ray oscillation photographs did not show the existence of stacking fault in the crystal. A polar twin, which appears in the prismatic surface region of the crystal, frequently has crystallographic (100) boundary planes with the matrix crystal. A possible model for the atomic configuration of the polar twin is presented, in which, instead of Zn-O type bond, Zn-Zn type and O-O type bonds are produced at (100) twin boundary and (001) twin plane. However, it is supposed that lattice strain at these planes is very small and the surface energies of these planes are not so high.
URI: http://hdl.handle.net/10069/16469
ISSN: 02871319
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 11

Citable URI : http://hdl.handle.net/10069/16469

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