Effect of Magnesium Oxide on Faceted Vicinal (0001) Surface of Aluminum Oxide期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Effect of Magnesium Oxide on Faceted Vicinal (0001) Surface of Aluminum Oxide

Authors:	Chan Woo Park Duk Yong Yoon

Affiliation:	Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea;National Creative Research Initiative Center for Microstructure Science of Materials, College of Engineering, Seoul National University, Seoul 151-742, Korea

Abstract:	Atomic force microscopy has been used to observe the vicinal (0001) surface of Al₂O₃. The surface develops a hill-and-valley structure when heat-treated in air and becomes defaceted and therefore atomically rough when heat-treated in an MgO atmosphere at 1600°C. The results are consistent with the previously observed polyhedral equilibrium shape of Al₂O₃ crystal and the surface roughening effect of MgO.

Keywords:	surface alumina magnesium oxide