Effects of (Mo/W) Co-Doping on Bulk BSCCO Superconductor
Abstract
The
effect of Mo substituting and W doping on (BiPb)2WxSr2Ca3Cu4-yMoyO12+& system where x=0, y= 0;
x = 0.1, y= 0.0, 0.03, 0.06, 0.09 and 0.12 have been investigated. The
superconducting samples prepared by using conventional solid state reaction
method. The calcination and sintering temperatures were obtained by using
differential thermal analysis technique (TGA). In order to investigate crystal
structure properties and determine the phase determination, X-ray powder
diffraction (XRD) measurements were performed. The XRD data showed that the
Bi-(2223) phase transforms into the Bi-(2212) phase with increasing Mo
substituting for Cu. The morphology properties of the samples determined with
the scanning electron microscopy (SEM) measurements. The effects of Mo and W
substituted on BSCCO system; we have also performed electrical resistivity
(R-T) in order to get critical temperatures. From electrical resistivity
critical temperature and transition temperature width were both increased with
the increasing of Mo content. The alternative current susceptibility
measurement (AC) was performed to obtain critical transition temperature and
study magnetic properties of the samples.
Keywords
Differential thermal analysis,physical properties,solid state reaction
References
- [1]. Maeda H., Tanaka Y., Fukutomi, M. A new high-Tc oxide superconductor without a rare earth element. Japanese J., 1988.
- [2]. Bednorz J.G., Müller K.A., Perovskite-type oxides -The new approach to high-Tc superconductivity. Rev. Mod. Phys.,1988.
- [3]. Özkurt B., Madre M.A., Sotelo A., Diez J.C., Structural, superconducting and mechanical properties of molybdenum substituted Bi1.8Sr2Ca1.1Cu2.1O y. J. Mater. Sci. Mater. Electron., 24 (2013) 1158–1167.
- [4]. Wang Y., Wang C., Feng Q., Li X., Ching, T.W. Fabrication and Experiment of Racetrack HTS Magnet for Stator Field-Excitation HTS Machine. IEEE Trans. Appl. Supercond., 1–1 2017.
- [5]. Gundogmus H., Ozcelik B., Sotelo A. Madre, M.A. Effect of Yb-substitution on thermally activated flux creep in the Bi 2Sr2Ca1Cu2-xYbxOy superconductors. J. Mater. Sci. Mater. Electron., 24 (2013) 2568–2575.
- [6]. Özçelik B., Gündoğmuş H., Yazıcı, D. Effect of (Ta/Nb) co-doping on the magnetoresistivity and flux pinning energy of the BPSCCO superconductors. J. Mater. Sci. Mater. Electron., 25 (2014) 2456–2462.
- [7]. Ozcelik B., Altın S., Yakıncı M. Effect of Vanadium-Titanium Co-doping on the BPSCCO Superconductor. Supercond. Nov. Magn., 2011.
- [8]. Sotelo A., Madre M.A., Diez J.C., Rasekh S., Angurel L.A., Martinez E. The influence of Pb and Ag doping on the Jc (H, T) dependence and the mechanical properties of Bi-2212 textured rods. Supercond. Sci. Technol. 22 (2009) 34012.
- [9]. Kalsi S.S. High-Temperature Superconducting Transformers. Wiley Encyclopedia of Electrical and Electronics Engineering., John Wiley & Sons, Inc., Hoboken, NJ, USA, 2015; pp. 1–25.
- [10]. Das J., Ray R.N. Studies on hunting of hysteresis motor with HTS element on rotor. IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems, 2016; pp. 1–4.