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Journal of Nanomaterials
Volume 2010 (2010), Article ID 191058, 5 pages
http://dx.doi.org/10.1155/2010/191058
Research Article

Low-Temperature Synthesis of Superconducting Nanocrystalline

1Department of Physics, Northern Illinois University, DeKalb, IL 60115, USA
2Material Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
3Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT 84112, USA

Received 14 October 2010; Accepted 31 December 2010

Academic Editor: Xuedong Bai

Copyright © 2010 Jun Lu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Magnesium diboride (MgB2) is considered a promising material for practical application in superconducting devices, with a transition temperature near 40 K. In the present paper, nanocrystalline MgB2 with an average particle size of approximately 70 nm is synthesized by reacting LiBH4 with MgH2 at temperatures as low as 450°C. This synthesis approach successfully bypasses the usage of either elemental boron or toxic diborane gas. The superconductivity of the nanostructures is confirmed by magnetization measurements, showing a superconducting critical temperature of 38.7 K.