Synthesis of Bi2223 phase via PbO addition to the BSCCO(2234) system

Authors

Aizanel Guingab ⋅ PH National Institute of Physics, University of the Philippines Diliman
Jonalds Tacneng ⋅ PH National Institute of Physics, University of the Philippines Diliman
Vallerie Ann Samson ⋅ PH National Institute of Physics, University of the Philippines Diliman
Roland Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

In this study, PbO addition to the Bi2234 system was found to help in the formation of the Bi2223 phase. The resistance vs temperature (R-T) curves showed that the T_c increases with increasing PbO content indicating that the high-T_c phase stabilizes. The T_c for the pure sample is as high as 87K while the T_c for x=0.1 and x=0.3 is found at 89K and 106K, respectively. This study also showed that Bi2223 phase can be formed by sintering the samples for 24 hours at 840°C and for 48 hours at 850°C. The highest volume fraction of Bi2223 of 76.3% was attained for x=0.3 where the lowest volume fraction of 8.1% for Bi2212 was also obtained. The PbO enhanced the diffusion of the excess calcium and copper unit from the Bi2234 into the Bi2212 phase exhausting it for the formation of the Bi2223 phase as shown in the volume fractions obtained from the x-ray diffraction (XRD) spectra.

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Issue

2019: Proceedings of the 37th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2019-PA-15

Section

Poster Session PA

Published

2019-05-19

How to Cite

[1]

A Guingab, J Tacneng, VA Samson, and R Sarmago, Synthesis of Bi2223 phase via PbO addition to the BSCCO(2234) system, Proceedings of the Samahang Pisika ng Pilipinas 37, SPP-2019-PA-15 (2019). URL: https://proceedings.spp-online.org/article/view/SPP-2019-PA-15.