Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh

Copper oxide based superconductor Bismuth (Bi, Pb)SrCaCuO or well known as (BSCCO-2223) with nano-yA^C^ addition have been prepared via co-precipitation (COP) method. The precursor powder was prepared using COP method while addition of nanoparticles yA^Os was done through solid state reaction method...

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Main Author: Mat Jusoh, Masnita
Format: Thesis
Language:English
Published: 2011
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Online Access:https://ir.uitm.edu.my/id/eprint/65193/1/65193.pdf
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spelling my-uitm-ir.651932023-01-11T03:47:54Z Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh 2011 Mat Jusoh, Masnita Superconducting materials. Superconductors Copper oxide based superconductor Bismuth (Bi, Pb)SrCaCuO or well known as (BSCCO-2223) with nano-yA^C^ addition have been prepared via co-precipitation (COP) method. The precursor powder was prepared using COP method while addition of nanoparticles yA^Os was done through solid state reaction method. Four point probe, X-ray diffraction (XRD), energy dispersive analysis (EDAX) and scanning electron micrograph (SEM) have been used to characterize the materials. By COP method, the precursor was fabricated into bulk samples and the addition of nano-yA^Os is between 0.0 wt% -1.0 wt % from molecular weight of sample. All prepared samples have been sintered in various sintering duration of 12, 24, 36, 48 and 56 hours at 850°C, respectively. The focus of investigation is on critical transition temperature (Tc), critical current density (Jc), Bi-2223 phase percentage and microstructure development. All four characteristics have been studied for each experimental sample. Sample with addition 0.7 wt% of nano-yAl203 and sintered at 48 hours shows maximum Jc value of 9.78 A/cm2 with Tc of 101 K. Jc value depends on sintering duration. Sample sintered for 12 hours at 850°C did not show superconductivity properties very well. The Jc obtained is 3.7 A/cm2 and the Tc is lower than 90 K. The COP method has shown to produce high percentage of Bi-2223 superconducting phase. A small addition of nano-yAl203 is found to improve the Bi-2223 phase where intergrains connectivity is enhanced and weak links are reduced, resulted in enhanced Jc value. Larger grains size is observed with increasing sintering time as manifested in samples sintered at 56 hours. In COP prepared samples, the nanoparticles act as pinning flux centre under certain condition. 2011 Thesis https://ir.uitm.edu.my/id/eprint/65193/ https://ir.uitm.edu.my/id/eprint/65193/1/65193.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences Syed Yahya, Syed Yusainee
institution Universiti Teknologi MARA
collection UiTM Institutional Repository
language English
advisor Syed Yahya, Syed Yusainee
topic Superconducting materials
Superconductors
spellingShingle Superconducting materials
Superconductors
Mat Jusoh, Masnita
Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh
description Copper oxide based superconductor Bismuth (Bi, Pb)SrCaCuO or well known as (BSCCO-2223) with nano-yA^C^ addition have been prepared via co-precipitation (COP) method. The precursor powder was prepared using COP method while addition of nanoparticles yA^Os was done through solid state reaction method. Four point probe, X-ray diffraction (XRD), energy dispersive analysis (EDAX) and scanning electron micrograph (SEM) have been used to characterize the materials. By COP method, the precursor was fabricated into bulk samples and the addition of nano-yA^Os is between 0.0 wt% -1.0 wt % from molecular weight of sample. All prepared samples have been sintered in various sintering duration of 12, 24, 36, 48 and 56 hours at 850°C, respectively. The focus of investigation is on critical transition temperature (Tc), critical current density (Jc), Bi-2223 phase percentage and microstructure development. All four characteristics have been studied for each experimental sample. Sample with addition 0.7 wt% of nano-yAl203 and sintered at 48 hours shows maximum Jc value of 9.78 A/cm2 with Tc of 101 K. Jc value depends on sintering duration. Sample sintered for 12 hours at 850°C did not show superconductivity properties very well. The Jc obtained is 3.7 A/cm2 and the Tc is lower than 90 K. The COP method has shown to produce high percentage of Bi-2223 superconducting phase. A small addition of nano-yAl203 is found to improve the Bi-2223 phase where intergrains connectivity is enhanced and weak links are reduced, resulted in enhanced Jc value. Larger grains size is observed with increasing sintering time as manifested in samples sintered at 56 hours. In COP prepared samples, the nanoparticles act as pinning flux centre under certain condition.
format Thesis
qualification_level Master's degree
author Mat Jusoh, Masnita
author_facet Mat Jusoh, Masnita
author_sort Mat Jusoh, Masnita
title Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh
title_short Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh
title_full Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh
title_fullStr Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh
title_full_unstemmed Effects of nanometer yAl203 addition on superconducting properties of Bi16Pbo.4Sr2Ca2Cii30x (Bi-2223) superconductor / Masnita Mat Jusoh
title_sort effects of nanometer yal203 addition on superconducting properties of bi16pbo.4sr2ca2cii30x (bi-2223) superconductor / masnita mat jusoh
granting_institution Universiti Teknologi MARA (UiTM)
granting_department Faculty of Applied Sciences
publishDate 2011
url https://ir.uitm.edu.my/id/eprint/65193/1/65193.pdf
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