Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods

Ceramic superconducting materials could enhance the efficiency of electronics, however, there are issues such as low current density and the requirements of cooling this material to achieve Meissner effect which hinders superconductivity. This can be rectified either with addition or substitutes of...

Full description

Saved in:

Bibliographic Details
Main Author:	Bryan Andrew, Balasan
Format:	Thesis
Language:	English
Published:	2021
Subjects:	Q Science (General) T Technology (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/34685/1/Comparative%20study%20of%20bi-2223%20synthesised%20via%20electrospinning.wm.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-ump-ir.34685
record_format	uketd_dc
spelling	my-ump-ir.346852023-05-18T04:49:58Z Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods 2021-07 Bryan Andrew, Balasan Q Science (General) T Technology (General) Ceramic superconducting materials could enhance the efficiency of electronics, however, there are issues such as low current density and the requirements of cooling this material to achieve Meissner effect which hinders superconductivity. This can be rectified either with addition or substitutes of foreign rare earth elements to the material to modify their properties. The objective of the research was to synthesise bismuth-based superconductor Bi2Sr2Ca2Cu3O10 (Bi-2223) via electrospinning, characterisation of thermal, structural and electrical transport properties of samples, and lastly to study the effect of Pb addition unto precursors of samples. For this research, electrospinning has downsized the grains of samples, and samples prepared via coprecipitation was compared with the electrospun samples to investigate their critical temperature, activation energy and current density. The electrospun samples were expected to exhibit grain morphology advantage over coprecipitation prepared samples to enhance the problem of low current density present in superconductors stemming from weak intergrain links of grain boundaries. The samples were characterised via the naked eye, thermal analysis, electron imaging, crystallography analysis, four-point probe method and magnetic susceptibility. The electrospun samples (ES) investigated via electron imaging for pellet form had abundancy of low angled grain boundaries when compared with coprecipitation prepared samples (COP). Critical temperatures of P-COP-2223, P-ESPb-2223 and P-ES-2223 achieved at 98 K, 80 K and 68 K respectively. This was due to volume fraction of Bi-2223 phase in the electrospun samples being lower than of coprecipitated samples. The current density measurement for P-COP-2223 led with 4928 A/cm2, then P-ESPb-2223 with 1852 A/cm 2 whereas P-ES-2223 not obtainable due to low angled grain boundaries and the instrument’s low sensitivity. This research contributes to the effect of grain boundaries by synthesising a denser grain boundary at the expense of weaker pinning centres which proves the capability of synthesising Bi-2223 with electrospinning method. 2021-07 Thesis http://umpir.ump.edu.my/id/eprint/34685/ http://umpir.ump.edu.my/id/eprint/34685/1/Comparative%20study%20of%20bi-2223%20synthesised%20via%20electrospinning.wm.pdf pdf en public masters Universiti Malaysia Pahang Faculty of Industrial Sciences and Technology Mazwir, Muhammad Hafiz
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
advisor	Mazwir, Muhammad Hafiz
topic	Q Science (General) T Technology (General)
spellingShingle	Q Science (General) T Technology (General) Bryan Andrew, Balasan Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
description	Ceramic superconducting materials could enhance the efficiency of electronics, however, there are issues such as low current density and the requirements of cooling this material to achieve Meissner effect which hinders superconductivity. This can be rectified either with addition or substitutes of foreign rare earth elements to the material to modify their properties. The objective of the research was to synthesise bismuth-based superconductor Bi2Sr2Ca2Cu3O10 (Bi-2223) via electrospinning, characterisation of thermal, structural and electrical transport properties of samples, and lastly to study the effect of Pb addition unto precursors of samples. For this research, electrospinning has downsized the grains of samples, and samples prepared via coprecipitation was compared with the electrospun samples to investigate their critical temperature, activation energy and current density. The electrospun samples were expected to exhibit grain morphology advantage over coprecipitation prepared samples to enhance the problem of low current density present in superconductors stemming from weak intergrain links of grain boundaries. The samples were characterised via the naked eye, thermal analysis, electron imaging, crystallography analysis, four-point probe method and magnetic susceptibility. The electrospun samples (ES) investigated via electron imaging for pellet form had abundancy of low angled grain boundaries when compared with coprecipitation prepared samples (COP). Critical temperatures of P-COP-2223, P-ESPb-2223 and P-ES-2223 achieved at 98 K, 80 K and 68 K respectively. This was due to volume fraction of Bi-2223 phase in the electrospun samples being lower than of coprecipitated samples. The current density measurement for P-COP-2223 led with 4928 A/cm2, then P-ESPb-2223 with 1852 A/cm 2 whereas P-ES-2223 not obtainable due to low angled grain boundaries and the instrument’s low sensitivity. This research contributes to the effect of grain boundaries by synthesising a denser grain boundary at the expense of weaker pinning centres which proves the capability of synthesising Bi-2223 with electrospinning method.
format	Thesis
qualification_level	Master's degree
author	Bryan Andrew, Balasan
author_facet	Bryan Andrew, Balasan
author_sort	Bryan Andrew, Balasan
title	Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
title_short	Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
title_full	Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
title_fullStr	Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
title_full_unstemmed	Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
title_sort	comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods
granting_institution	Universiti Malaysia Pahang
granting_department	Faculty of Industrial Sciences and Technology
publishDate	2021
url	http://umpir.ump.edu.my/id/eprint/34685/1/Comparative%20study%20of%20bi-2223%20synthesised%20via%20electrospinning.wm.pdf
_version_	1783732205351075840

Comparative study of bi-2223 synthesised via electrospinning and coprecipitation methods

Similar Items