کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5365958 | 1388341 | 2010 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of microstructure on the nanomechanical properties of Zn1âxCdxSe alloys Effect of microstructure on the nanomechanical properties of Zn1âxCdxSe alloys](/preview/png/5365958.png)
We present a study of the nanoindentation behavior of Zn1âxCdxSe epilayers grown using molecular beam epitaxy; the surface roughness, microstructure, and crystallinity were analyzed using atomic force microscopy, cross-sectional transmission electron microscopy, and X-ray diffraction; the hardness H and elastic modulus E were studied using nanoindentation techniques. We found that these highly crystalline materials possessed no stacking faults or twins in their microstructures. We observed a very marked increase in the value of H and a significant decrease in the value of E upon increasing the concentration of Cd, presumably because of an increase in the stiffness of the CdSe bond relative to that of the ZnSe bond. We observed a corresponding shrinkage of the contact-induced damage area for those films having a small grain size and a higher value of H. It appears that resistance against contact-induced damage requires a higher Cd concentration.
Journal: Applied Surface Science - Volume 256, Issue 7, 15 January 2010, Pages 2128-2131