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Synthesis and Characterization of Samarium Doped Bi₁.₆Pb₀.₄Sr₂Ca₂Cu₃O₁₀ Superconductor Prepared Via Coprecipitation Method


Citation

Hamadneh, Imad Moh’d Khair Rashid (2002) Synthesis and Characterization of Samarium Doped Bi₁.₆Pb₀.₄Sr₂Ca₂Cu₃O₁₀ Superconductor Prepared Via Coprecipitation Method. PhD thesis, Universiti Putra Malaysia.

Abstract / Synopsis

The coprecipitation technique was used in the preparation of samarium doped Bi₁.₆Pb₀.₄Sr₂Ca₂Cu₃O₁₀ polycrystalline ceramic superconductor. In this study, four sites (calcium, bismuth, strontium and copper) were separately subjected to Sm doping with nominal composition ranging from x=0 to x=0.3 at different sintering times. The superconducting properties of the samples have been investigated. The pure sample, which exhibits TC(R=O) around 102 -103 K and TC-onset around 108 K, showed large flaky grains of ~7 µm in size which are randomly distributed_ However at longer sintering time the pure superconductor showed a better orientation as compared to that of the short sintering time sample. The calculated value of Josephson current 10 , obtained from the ac susceptibility data showed a much higher value (I₀=138.7µA) as compared to the conventional prepared to that of the sample prepared by conventional method (I₀=55.9 µA). This indicates better grain connectivity and higher 2223 phase content, which was confirmed by SEM photographs


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Additional Metadata

Item Type: Thesis (PhD)
Subject: Precipitation (Chemistry).
Subject: Samarium.
Call Number: FSAS 2002 51
Chairman Supervisor: Professor Abdul Halim bin Shaari, PhD
Divisions: Faculty of Science and Environmental Studies
Depositing User: Muizzudin Kaspol
Date Deposited: 14 Feb 2011 01:12
Last Modified: 01 Oct 2013 03:44
URI: http://psasir.upm.edu.my/id/eprint/9522
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