The Malaysian Journal of Analytical Sciences Vol 17 No 1 (2013): 1 – 10

 

 

 

INFLUENCE OF HEAT TREATMENTS ON ELECTRICAL PROPERTIES AND MICROSTRUCTURE OF 10% MASS FRACTION OF SUCROSE YBCO SUPERCONDUCTOR

 

(Kesan Rawatan Haba Ke Atas Sifat-Sifat Elektrik dan Mikrostruktur 10% Pecahan Jisim Sukrosa YBCO Superkonduktur)

 

S.Khalida1*, F.Fariesha2, H.Azhan3 and S.Y.Yusainee4

 

1International Education College (INTEC),

UiTM Seksyen 17, 40200 Shah Alam, Selangor, Malaysia

2Faculty of Applied Sciences,

Universiti Teknologi MARA Perak,, Kampus Tapah, 35400Tapah Road, Perak, Malaysia

3Universiti Teknologi MARA Pahang, 26400 Bandar Jengka, Pahang, Malaysia

4Faculty of Applied Sciences,

Universiti Teknologi MARA,40450 Shah Alam, Selangor, Malaysia

 

*Corresponding author: khalidasalleh@salam.uitm.edu.my

 

 

Abstract

The influence of different heat treatments on the superconducting properties of 10% mass fraction of sucrose structure YBCO superconductor was investigated. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) equipments were used to determine the phase of superconductor and structural studies respectively at10% mass fraction of sucrose. The samples were prepared via solid state (SSM) and co-precipitation (CPM) reaction methods and underwent sintering and heat treatment process at 900°C, 930°C and 960°C respectively with mixing of C12H22O11 sucrose during pelletization. The TC,on decreases with respect to higher heat treatment temperature. The suppression of both TC,on and TC,off indicates the destruction of superconductivity trends. The best TC,off were achieved in pure SSM and CPM samples sintered at 950°C for 5 hours with TC,off 86K and 91K respectively. Comparing with pure YBCO, the 10% mass fraction of sucrose YBCO exhibited higher critical current, IC by two times. It indicates the effect of high surface area in porous structure. The XRD results confirmed that all the samples remain in single phase, which indicates no effect of sucrose in the porous structures sample and maintaining in orthorhombic structure. Higher heat treatment at 960°C resulted in destruction on its superconductivity behavior due to the partial melt phase on its microstructure, especially in CPM. This is due to the smaller grain size of samples which trapped more heat and causing partial melting to occur rapidly. It can be deduced that, annealing temperatures at 900°C and 930°C are the best optimum heat treatments for CPM and SSM porous superconductor, respectively. 

 

Keywords: YBCO superconductor, porous superconductor, sucrose

 

References

1.       Noudem, J. G., Reddy,E. S., and Schmitz, G. J. (2003). Magnetic and transport properties of YBa2Cu3Oy superconductor foams,  Physica C, 390: 286-290.

2.       Noudem, J.G., Guilmeau, E., Chateigner, D., Lambert,S., Reddy, E.S., Ouladdiaf, B., and Schmitz, G.J. (2004). Properties of YBa2Cu3Oy-textured superconductor foams, Physica C, 408: 655-656.

3.       Reddy, E. S., and Schmitz, G. J. (2002). Superconducting foams. Supercond. Sci. Technol, 15: 21-24.

4.       Reddy, E. S., Herweg, M., and Schmitz, G. J. (2003). Processing of Y2BaCuO5 foams. Supercond. Sci. Technol, 16: 608-612.

5.       Fiertek, P., and Sadowski, W. (2006 ). Processing of porous structures of YBa2Cu3O7-∂ High Temperature superconductor, Materials Science-Poland, 24: 1103-1108.

6.       Fiertek, P., Andrzejeski, B., and Sadowski, W. (2010). Synthesis and transport properties of porous superconducting ceramics of YBa2Cu3O7-∂, Rev. Adv. Mater. Sci, 23: 52-56.

7.       Grinenko, V., Krasnoperov, E. P., Stoliarov, V. A., Bush, A. A., and Mikhajlov, B. P. (2006). Superconductivity in porous MgBr2, RRC Kurchatov Institute, Moscow, Rusia.

8.       Poeppel, R. B., Goretta, K. C., Balachandran, U., Dorris, S. E., Lanagan, M. T., Picciolo, J. J., Singh, J. P., and Youngdahl, C. A. (1992). Processing and properties of bulk high temperature superconductors, Brazillian Journal of Physics, 22: 2.

9.       Hanic, F., Cigan, A., Butcha, S., Manka, J., and Zrubec, V. (2001). A possible using of superconducting measurement to better understanding of catalytic properties of YBa2Cu3Ox. Measurement science review 1: 1.

10.    Warrier, K. G. K., Varma, H. K., Mani,T. V., and Damodaran, A. D. (1993). Zone refining of sintered, microwave-derived YBCO superconductors,  Journal of Materials  sciences. 30: 3238 - 3241.

 

 

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