[15p-WL2_401-1~13] 6.2 Carbon-based thin films

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[15p-WL2_401-13] Direct Diamond Growth on Insulating MgO Substrates

〇Makoto Takayanagi¹, Yuta Izu², Yukihiro Sakamoto², Kei Ikeda¹, Kaoru Yagishita¹, Hiraku Maruyama¹, Tomofumi Susaki¹ (1.Mitsubishi Chemical Corp., 2.CIT)

Keywords:

diamond,MgO,CVD

In this study, we investigated the direct growth of diamond on insulating MgO substrates without any surface pretreatment using microwave plasma chemical vapor deposition (MPCVD). Although MgO is an electrical insulator, its surface properties strongly depend on the crystallographic orientation: the presence or absence of surface polarity differs among orientations, and the surface electronic states are known to exhibit metallic-like behavior in certain cases. Such orientation-dependent surface states may play an important role in determining the initial nucleation behavior of diamond.