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Journal of Materials Science
Published in: Journal of Materials Science 3/2019

04-10-2018 | Ceramics

Deformation patterns and fracture stress of beta-phase gallium oxide single crystal obtained using compression of micro-pillars

Authors: Y. Q. Wu, S. Gao, R. K. Kang, H. Huang

Published in: Journal of Materials Science | Issue 3/2019

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Abstract

The deformation of single-crystal beta-phase gallium oxide (or β-Ga2O3) micro-pillars under compression was investigated with the aid of transmission electron microscopy. High-density stacking faults were the dominant deformation defects in the plastically deformed micro-pillars. Micro-cracks were found along (200), (001) and (010) lattice planes and fracture occurred along (200) lattice plane when compressive strain was sufficiently great. Lattice bending was also observed in the fractured pillar. The average fracture stress and strain of β-Ga2O3 being measured are 7.25 ± 1.11 GPa and 3.80 ± 0.57%, respectively, which have never been reported previously.
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Metadata
Title
Deformation patterns and fracture stress of beta-phase gallium oxide single crystal obtained using compression of micro-pillars
Authors
Y. Q. Wu
S. Gao
R. K. Kang
H. Huang
Publication date
04-10-2018
Publisher
Springer US
Published in
Journal of Materials Science / Issue 3/2019
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-2978-9

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