Cleavage Steps of KCl Single Crystals(<Special Issue>The Late Prof. Kazumi Nishioka)

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概要

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• The relation between the cleavage steps and dislocation etch pits patterns was examined by comparing cleavage step patterns and dislocation etch pit patterns in KCl crystals. The following specimens were used in this study; (1) pure crystal, (2) Sr-doped crystal (0.013 at.%), (3). Sr-doped crystal (0.03at.%), (4) Ca-doped crystal (0.02 at.%). Special attention was paid to the effects of impurities and cleavage temperature on the cleavage step pattern. The results obtained are as follows: (1) Ripple markings (see the section 3) were observed on the cleaved surfaces in all crystals examined in this work, but dislocation nucleation at the ripple markings was strongly affected by the impurities. (2) When the dislocations were nucleated at the ripple markings, a number of cleavage steps were newly generated there. (3) The straightness of the cleavage step lines was strongly dependent on the homogeneity of the dislocations and/or impurities in the crystals. (4) No effect of cleavage temperature on the step pattern was found in the cleavage experiment in liquid nitrogen.

• 日本結晶成長学会の論文
• 1999-03-31

著者

• Komatsu Hiroshi

  Institute For Materials Research Tohoku University

• Nishioka Kazumi

  Faculty of Engineering The Univercity of Tokushima

• Nishioka K

  Faculty Of Engineering The University Of Tokushima

• Yamaguchi Koji

  Faculty Of Engineering The University Of Tokushima

• Yamada Fumio

  Faculty Of Engineering Sizuoka University

• Komatsu H

  Institute For Materials Research Tohoku University

• Inoue Tetsuo

  Faculty of Engineering, The University of Tokushima

• Komatsu Hiroshi

  Institute For Materials Research (imr) Tohoku University

• Inoue Tetsuo

  Faculty Of Engineering The University Of Tokushima

• Yamada Fumio

  Faculty Of Engineering The University Of Tokushima

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