Experimental Study on the Phase Formation of MgxB2 (x=0.8, 1.0, 1.2)

Authors

  • Mohd Faizal Mohd Aris

DOI:

https://doi.org/10.11113/mjfas.v5n1.281

Keywords:

Magnesium diboride, Phase formation, Porous,

Abstract

Phase formation of Magnesium diboride MgxB2 (x=0.8, 1.0, 1.2) by in situ reaction of Magnesium (Mg) and Boron (B) at different annealing temperature by varying the nominal Mg composition was compared. The X-ray difffraction pattern indicates that Magnesium Oxide (MgO) is the major secondary phase. Some unreacted Mg was found for nominally stoichiometric and Mg excess samples annealed at or below 750°C. However, no unreacted Mg was detected by XRD for Mg deficient samples. Scanning Electron microscopy images show the porous nature of synthesised samples.

References

J. Nagmatsu, N. Nakagawa, T. Murunaka, Y. Zenitany, J. Akimitsu, Nature 410 (2001) 63.

D. C. Larbalestier 2001 Strongly linked current flow in polycrystalline forms of the superconductor MgB2 Nature 410 186

J. Karpinski, S.M. Kazakov, J. Jun, M. Angst, R. Punzniak, A. Wisniewski, P. Bordet, Physica C 385 (2003) 42.

J. Karpinsky, S.M. Kazakov, J. Jun, N.D. Zhigadlo, M. Angst, R. Punziak, A. Wisniewski, condmat/0304658.

Z.X. Cheng, X.L. Wang, A.V. Pan, H.L. Liu, S.X. Dau, Journal of Crystal Groeth 263 (2004) 218-222.

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Published

05-08-2014