Effect of different-sized h-BN nano-particles on some properties of MgB sub(2) superconductors

The present study reports the effect of hexagonal boron nitride (h-BN) doping on the superconducting properties of bulk MgB sub(2) samples. Structural, electrical and magnetic properties of 3 wt% h-BN doped MgB sub(2) samples are studied in terms of three different sized h-BN nanoparticles. The resu...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2016-08, Vol.27 (8), p.8512-8517
Main Authors: Karaboga, F, Yetis, H, Oz, M, Belenli, I
Format: Article
Language:English
Subjects:
Borides
Deviation
Doping
Magnesium compounds
Nanostructure
Particle size
Superconductivity
Transition temperature
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Summary:The present study reports the effect of hexagonal boron nitride (h-BN) doping on the superconducting properties of bulk MgB sub(2) samples. Structural, electrical and magnetic properties of 3 wt% h-BN doped MgB sub(2) samples are studied in terms of three different sized h-BN nanoparticles. The results show that h-BN doping has no significant change on critical transition temperature ( plus or minus 0.5 K deviation), but decreases the magnetic J sub(c) with increasing the h-BN particle size. Among the doped samples, a highest J sub(c) (T = 10 K) value of 1.8 10 super(4) A/ cm super(2) is achieved for the sample doped with the smallest sized h-BN at zero external magnetic field but it is still lower than the 2.5 10 super(4) A/ cm super(2) obtained for the un-doped sample. In the scope of this study, it is investigated whether or not the nano-sized h-BN particle is a possible candidate to improve the pinning properties of the MgB sub(2) sample and we suggest that particle size is very important parameter in h-BN doping into MgB sub(2).
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-016-4867-9