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Effect Of Addition Of Tio2/Sio2 Nanoparticles On Hc2 And Hirr In Mgb2 Bulks, Y. Zhang, Saeid Soltanian, Y. Zhao, S. Zhou, S. X. Dou
Effect Of Addition Of Tio2/Sio2 Nanoparticles On Hc2 And Hirr In Mgb2 Bulks, Y. Zhang, Saeid Soltanian, Y. Zhao, S. Zhou, S. X. Dou
Shi Xue Dou
In this paper, MgB2 bulks were prepared with doped TiO2 nanoparticles surface-modified by 5-10% SiO2. Quantitative X-ray diffraction (XRD) analysis was performed to obtain the weight fraction of impurities using the Rietveld method. The effects of addition of TiO2/SiO2 nanoparticles on the critical temperature (Tc), the upper critical field (Hc2), and the irreversibility field (Hirr) as a function of doping rates at 750°C are reported. It has been found that the addition of TiO2/SiO2 nanoparticles resulted in small depressions in Tc, while the Hc2 and Hirr performances were improved due to TiO2/SiO2 nanoparticle doping.