Oxygen polarity and interfacial atomic arrangement in an MgxZn1-xO/C-MgO/sapphire heterostructure

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	Oxygen polarity and interfacial atomic arrangement in an MgxZn1-xO/C-MgO/sapphire heterostructure
	He, X ; Gu, L ; Guo, SD ; Liu, ZL ; Yu, RC ; Mei, ZX ; Du, XL ; Liu, BG ; Ikuhara, Y ; Duan, XF
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	2013
卷号	46 期号:14
ISSN号	0022-3727
通讯作者	Mei, ZX (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Oxygen polarity and interfacial structure of an Mg0.55Zn0.45O/Mg0.17Zn0.83O/MgO/sapphire heterostructure were determined by electron energy-loss spectroscopy and aberration-corrected scanning transmission electron microscopy. It was found that O-polarity occurs by an uncommon mechanism in the MgxZn1-xO film with a 0.5 nm-thick compressively strained rocksalt MgO buffer; and that the similar to 18% lattice mismatch between Mg0.17Zn0.83O and sapphire is mostly accommodated by misfit dislocations at the Mg0.17Zn0.83O/MgO interface. Density functional theory calculations indicate that the MgO buffer strongly tends to manifest a rocksalt structure rather than wurtzite. Zn substitution of the topmost Mg atoms in the MgO buffer is likely to induce such O-polarity.
资助信息	Ministry of Science and Technology of China [2007CB936301, 2011CB302002, 2009CB929404]; National Science Foundation of China [11174348, 61076007]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57310]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	He, X,Gu, L,Guo, SD,et al. Oxygen polarity and interfacial atomic arrangement in an MgxZn1-xO/C-MgO/sapphire heterostructure[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2013,46(14).
APA	He, X.,Gu, L.,Guo, SD.,Liu, ZL.,Yu, RC.,...&Duan, XF.(2013).Oxygen polarity and interfacial atomic arrangement in an MgxZn1-xO/C-MgO/sapphire heterostructure.JOURNAL OF PHYSICS D-APPLIED PHYSICS,46(14).
MLA	He, X,et al."Oxygen polarity and interfacial atomic arrangement in an MgxZn1-xO/C-MgO/sapphire heterostructure".JOURNAL OF PHYSICS D-APPLIED PHYSICS 46.14(2013).