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Title: X-ray powder diffraction study on the MgB2 superconductor with nano-SiC additions: The effects of sintering temperature
Authors: Tan, Kwee Yong
Tan, Kim Lee
Abdul Halim, Shaari
Tan, Kar Ban
Chen, Soo Kien
Keywords: MgB2;Sintering temperature;SiC;XRD;International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI)
Issue Date: 9-Jun-2010
Publisher: Universiti Malaysia Perlis
???metadata.dc.publisher.department???: School of Materials Engineering & School of Environmental Engineering
Citation: p.199-203
Series/Report no.: Proceedings of the International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI) 2010
Abstract: SiC added MgB2 polycrystalline samples were synthesized at low (650°C) and high (850°C) temperatures in order to study the sintering effect on the phase formation and superconducting properties. The MgB2 bulks with addition of 0wt%, 1wt%, 3wt% and 5wt% were studied with powder X-ray diffraction technique. We observed that MgB2 remained as the primary phase for both sintering temperature in all samples with the presence of MgO and Mg2Si as the main impurities. Some diffraction peaks associated with unreacted SiC is also noticeable. The intensity of the Mg2Si peaks was found to decrease in samples sintered at higher temperature. Temperature dependent magnetic moment measurement showed that the superconducting transition temperature, Tc decreases as the SiC addition level increases while lower sintering temperature degrade Tc to greater extent. The changes in the physical properties is discussed based on the results of phase formation, full width half maximum (FWHM), lattice parameter and crystallite size.
Description: International Conference on X-Rays and Related Techniques in Research and Industry (ICXRI 2010) jointly organized by Universiti Malaysia Perlis (UniMAP) and X-Ray Application Malaysia Society (XAPP), 9th - 10th June 2010 at Aseania Resort Langkawi, Malaysia.
URI: http://hdl.handle.net/123456789/10187
ISBN: 978-967-5760-02-0
Appears in Collections:Conference Papers

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