Investigate the Properties of Y211 Doping Effect in the New Superconducting Y7Ba11Cu18Oy Compound

Thitipong Kruaehong; Supphadate Sujinnapram; Tunyanop Nilkamjon; Sermsuk Ratreng; Pongkaew Udomsamuthirun

doi:10.4028/www.scientific.net/AMR.770.26

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 770Investigate the Properties of Y211 Doping Effect...

Investigate the Properties of Y211 Doping Effect in the New Superconducting Y₇Ba₁₁Cu₁₈O_y Compound

Abstract:

The new superconductors of Y-based compound, Y₇Ba₁₁Cu₁₈O_y(Y7-11-18), has been discovered by solid state reaction with the different ratios of raw materials. All obtained samples were analyzed and characterized by XRD and the FULLPROF program. The lattice parameters of Y7-11-18 were a=3.8268 Å, b=3.8810 Å and c= 69.8794 Å. The Y7-11-18 showed the sharp transition curve of resistivity (ρ) at the critical temperature (T_c) =94 K. The doping of Y₂BaCuO₅(Y211) showed that the higher Y211, the lower T_c and c lattice parameter. The SEM and EDX micrographs showed the grain size about 1-5 μm and without impurities. The DTA analysis resulted the decreasing of peritectic temperature from 962.74 °C by the higher Y211 contents.

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Periodical:

Advanced Materials Research (Volume 770)

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26-29

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.770.26

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Online since:

September 2013

Authors:

Thitipong Kruaehong, Supphadate Sujinnapram, Tunyanop Nilkamjon, Sermsuk Ratreng, Pongkaew Udomsamuthirun

Keywords:

High T_c Superconductor, T_c Measurement, X-Ray Diffraction (XRD), Y211 Doping

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