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Publication Citation: Effects of Polarity on Grain Boundary Migration in ZnO

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Author(s): Jong S. Lee; Sheldon M. Wiederhorn;
Title: Effects of Polarity on Grain Boundary Migration in ZnO
Published: Date Unknown
Abstract: Boundary migration of ZnO has been investigated using single crystals with defined crystallographic orientations. The migration rate of the basal C planes depended on the crystallographic polarity: Zn-terminated positive (0001)-planes. The migration in the non-polar directon was similar to that in the positive polarity direction. A ledge mechanism is suggested to be responsible for the grain boundary migration. These results explain the development of elongated grains in typical ZnO varistor ceramics.
Citation: American Ceramic Society Bulletin
Keywords: grain boundary migration,grain growth,zinc oxides,ZnO
Research Areas: Ceramics, Characterization