Title: | Nanoscratch study of Zn1-xMnxO heteroepitaxial layers |
Authors: | Chang, Yu-Ming Chang, Zue-Chin Lian, Derming Yang, Chu-Shou Yau, Wei-Hung Tsai, Chien-Huang Wu, Wen-Fa Chou, Chang-Pin 機械工程學系 Department of Mechanical Engineering |
Keywords: | Molecular beam epitaxy;Scanning electron microscopy;Transmission electron microscopy |
Issue Date: | 15-Oct-2010 |
Abstract: | We investigated the nanotribological properties of Zn1-xMnxO epilayers (0 <= x <= 0.16) grown by molecular beam epitaxy (MBE) on sapphire substrates. The surface roughness and friction coefficient (mu) were analyzed by means of atomic force microscopy (AFM) and hysitron triboscope nanoindenter techniques. The nanoscratch system gave the mu value of the films ranging from 0.17 to 0.07 and the penetration depth value ranging 294-200nm when the Mn content was increased from x = 0 to 0.16. The results strongly indicate that the scratch wear depth under constant load shows that higher Mn content leads to Zn1-xMnxO epilayers with higher shear resistance, which enhances the Mn-O bond. These findings reveal that the role of Mn content on the growth of Zn1-xMnxO epilayers can be identified by their nanotribological behavior. (C) 2010 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.apsusc.2010.06.027 http://hdl.handle.net/11536/150009 |
ISSN: | 0169-4332 |
DOI: | 10.1016/j.apsusc.2010.06.027 |
Journal: | APPLIED SURFACE SCIENCE |
Volume: | 257 |
Begin Page: | 37 |
End Page: | 41 |
Appears in Collections: | Articles |