Slip systems in wurtzite ZnO activated by Vickers indentation on {21¯1¯0} and {101¯0} surfaces at elevated temperatures

• Published in: Journal of crystal growth Vol. 393; pp. 119 - 122
• Main Authors: Ohno, Y., Koizumi, H., Tokumoto, Y., Kutsukake, K., Taneichi, H., Yonenaga, I.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01-05-2014; Elsevier
• Subjects: A1. Characterization; A1. Line defects; A2. Hydrothermal crystal growth; B1. Oxides; B2. Semiconducting II-VI materials; Brackets; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Defects and impurities in crystals; microstructure; Exact sciences and technology; High temperature; Indentation; Linear defects: dislocations, disclinations; Materials science; Methods of crystal growth; physics of crystal growth; Physics; Slip; Structure of solids and liquids; crystallography; Surface chemistry; Vickers indentation; Wurtzite; Zinc oxide; B2. Semiconducting II-VI materials; B1. Oxides; A1. Characterization; A1. Line defects; A2. Hydrothermal crystal growth; Crystal growth; Indentation; Dislocations; Hydrothermal growth; Monocrystals; Transmission electron microscopy; Hydrothermal synthesis; II-VI semiconductors; Slip system; Etch pits; Stress effects; Zinc oxide; Critical resolved shear stress
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/j.jcrysgro.2013.11.033

Dislocations were introduced in wurtzite zinc oxide single crystals by Vickers indentations on {21¯1¯0} and {101¯0} surfaces at elevated temperatures, and their slip systems were determined by transmission electron microscopy combined with etch pit observations. The observed system for {21¯1¯0} indentations was {101¯1¯}〈1¯21¯0〉 or (0001)〈1¯21¯0〉, while that for {101¯0} indentations was {101¯0}〈1¯21¯0〉. Activation of the slip systems was briefly discussed in terms of the Peierls stress and resolved shear stress acting on the slip systems.
•Dislocations in wurtzite zinc oxide single crystals are determined.•Vickers indentations are used on {211¯0} and {101¯0} at elevated temperatures.•Slip systems are determined by TEM combined with etch pit observations.•The slip system for {211¯0} indentations is {1011¯}〈1¯21¯0〉 or (0001)〈1¯21¯0〉.•The slip system for {101¯0} indentations is {101¯0}〈1¯21¯0〉.