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Effect of addition of nanoparticle TiO2/SiO2 on the superconducting properties of MgB2

Journal Article


Abstract


  • In this paper, bulk MgB2 was prepared by doping with nanoparticle TiO2 surface-modified by 5-10% SiO2. The doping ratio of TiO2/SiO2 to MgB2 was 0, 5, 10, and 15 wt%. The sintering temperature varied from 650C to 950ºC. Quantitative X-ray diffraction (XRD) analysis was performed to obtain the lattice constants and the weight fraction of impurities using the Rietveld method. It was found that the critival temperature (Tc) increases with the lattice constants. The critical current density (Jc) is affected by the doping ratio and the sintering temperature. The Jc exhibited the highest value at the doping ratio of 10 wt% for 5 K and 20 K and at the doping ratio was fixed at 5 wt%, the samples with the sintering temperature of 750ºC had the best Jc for 5 K and 20 K, while the sample with the sintering temperature of 850ºC exhibited the highest Jc at 30 K.

UOW Authors


Publication Date


  • 2008

Citation


  • Zhang, Y., Zhou, S., Wang, X. & Dou, S. Xue. (2008). Effect of addition of nanoparticle TiO2/SiO2 on the superconducting properties of MgB2. Physica C: Superconductivity and its Applications, 468 (15-20), 1383-1386.

Scopus Eid


  • 2-s2.0-50349100312

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/236

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 1383

End Page


  • 1386

Volume


  • 468

Issue


  • 15-20

Abstract


  • In this paper, bulk MgB2 was prepared by doping with nanoparticle TiO2 surface-modified by 5-10% SiO2. The doping ratio of TiO2/SiO2 to MgB2 was 0, 5, 10, and 15 wt%. The sintering temperature varied from 650C to 950ºC. Quantitative X-ray diffraction (XRD) analysis was performed to obtain the lattice constants and the weight fraction of impurities using the Rietveld method. It was found that the critival temperature (Tc) increases with the lattice constants. The critical current density (Jc) is affected by the doping ratio and the sintering temperature. The Jc exhibited the highest value at the doping ratio of 10 wt% for 5 K and 20 K and at the doping ratio was fixed at 5 wt%, the samples with the sintering temperature of 750ºC had the best Jc for 5 K and 20 K, while the sample with the sintering temperature of 850ºC exhibited the highest Jc at 30 K.

UOW Authors


Publication Date


  • 2008

Citation


  • Zhang, Y., Zhou, S., Wang, X. & Dou, S. Xue. (2008). Effect of addition of nanoparticle TiO2/SiO2 on the superconducting properties of MgB2. Physica C: Superconductivity and its Applications, 468 (15-20), 1383-1386.

Scopus Eid


  • 2-s2.0-50349100312

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/236

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 1383

End Page


  • 1386

Volume


  • 468

Issue


  • 15-20