Journal
EPL
Volume 120, Issue 1, Pages -Publisher
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/120/16002
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Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2016R1D1A1A09916302]
- Engineering Research Center (ERC) program of the National Research Foundation of Korea - Ministry of Education, Science and Technology [2015R1A5A1037627]
- Alexander von Humboldt Foundation
- National Research Foundation of Korea [2016R1D1A1A09916302] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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High-resolution transmission electron microscopy is applied to characterize the structure of a GaN grain boundary, which is subjected to the driving force for migration arising from the surface energy anisotropy during annealing at 500 degrees C in a transmission electron microscope. At a low driving force for migration, the grain boundary consists of atomically flat terrace regions interrupted by steps. As the driving force increases, grain-boundary steps become more frequent and undergo meandering, which is a typical attribute of kinetic roughening transition. Copyright (C) EPLA, 2017
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