Characterisation of nano-grains in MgB2 superconductors by transmission Kikuchi diffraction

Authors

Derek Chi Kian Wong, University of SydneyFollow
Wai K. Yeoh, University of SydneyFollow
Patrick W. Trimby, University of Sydney
Kaludewa Sujeewa Buddhimali De Silva, University of WollongongFollow
Peite Bao, University of Sydney
W Li, Universty of Western Sydney, University of WollongongFollow
Xun Xu, University of WollongongFollow
S X. Dou, University of WollongongFollow
Simon Peter Ringer, University of Sydney
Rongkun Zheng, University of Sydney

RIS ID

98898

Publication Details

Wong, D. C. K., Yeoh, W. K., Trimby, P. W., De Silva, K. S. B., Bao, P., Li, W. X., Xu, X., Dou, S. X., Ringer, S. P. & Zheng, R. K. (2015). Characterisation of nano-grains in MgB2 superconductors by transmission Kikuchi diffraction. Scripta Materialia, 101 36-39.

Abstract

We report the first application of the emerging transmission Kikuchi diffraction technique in the scanning electron microscope to investigate nano-grain structures in polycrystalline MgB₂ superconductors. Two sintering conditions were considered, and the resulting differences in superconducting properties are correlated to differences in grain structure. A brief comparison to X-ray diffraction results is presented and discussed. This work focusses more on the application of this technique to reveal grain structure, rather than on the detailed differences between the two sintering temperatures.