Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud

The conventional solid state reaction method was conducted in synthesizing low density Bi1.6Pb0.4Ca2Sr2Cu3Oy High Temperature Superconductor doped with Europium and Ytterbium. The morphology and structural identification, elemental composition, critical temperature and critical current were determin...

Full description

Bibliographic Details
Main Author:	Che Mahmud, Nor Azura
Format:	Thesis
Language:	English
Published:	2016
Subjects:	Physical and theoretical chemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/27193/ http://ir.uitm.edu.my/id/eprint/27193/1/TM_NOR%20AZURA%20CHE%20MAHMUD%20AS%2016_5.pdf

id	uitm-27193
recordtype	eprints
spelling	uitm-271932020-01-13T04:07:57Z http://ir.uitm.edu.my/id/eprint/27193/ Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud Che Mahmud, Nor Azura Physical and theoretical chemistry The conventional solid state reaction method was conducted in synthesizing low density Bi1.6Pb0.4Ca2Sr2Cu3Oy High Temperature Superconductor doped with Europium and Ytterbium. The morphology and structural identification, elemental composition, critical temperature and critical current were determined by Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD), Energy Dispersive Spectrometry (EDS) and four point probes respectively. The optimum level of low density superconductor obtained within the sample with ratio of polycrystalline sucrose to Bi(Pb)-2223 powder was at 0.050:1.950, where the highest Jc obtained was 6.053 A/cm2 at 77 K. The effect of rare earth elements, RE (Yb and Eu) substitutional doping in the optimum level of low-density (Bi1.6Pb0.4Sr2 RExCa2-xCu3Oy), high-temperature superconductor have shown that for all series of doping concentration, the 7c and Jc gradually decreased as x is increased. XRD analyses at varying concentration of doping level confirmed that at starting composition (Bi1.6Pbo.4Sr2 RExCa2-xCu3 0 y), the phases Bi(Pb)-2223 and Bi(Pb)-2212 (mixed phases) co-exist in the doped samples. The crystallographic structures underwent a transition from tetragonal (a=b≠c) to orthorhombic (a≠b≠c) as doping concentration of Eu and Yb were increased due to contraction of c-lattice. Eu and Yb were detected in the grains of Eu-doped and Yb-doped Bi(Pb)-2223 superconductor implying that both atoms were successfully doped into the crystal structure of low density Bi(Pb)-2223. 2016 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/27193/1/TM_NOR%20AZURA%20CHE%20MAHMUD%20AS%2016_5.pdf Che Mahmud, Nor Azura (2016) Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud. Masters thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Physical and theoretical chemistry
spellingShingle	Physical and theoretical chemistry Che Mahmud, Nor Azura Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud
description	The conventional solid state reaction method was conducted in synthesizing low density Bi1.6Pb0.4Ca2Sr2Cu3Oy High Temperature Superconductor doped with Europium and Ytterbium. The morphology and structural identification, elemental composition, critical temperature and critical current were determined by Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD), Energy Dispersive Spectrometry (EDS) and four point probes respectively. The optimum level of low density superconductor obtained within the sample with ratio of polycrystalline sucrose to Bi(Pb)-2223 powder was at 0.050:1.950, where the highest Jc obtained was 6.053 A/cm2 at 77 K. The effect of rare earth elements, RE (Yb and Eu) substitutional doping in the optimum level of low-density (Bi1.6Pb0.4Sr2 RExCa2-xCu3Oy), high-temperature superconductor have shown that for all series of doping concentration, the 7c and Jc gradually decreased as x is increased. XRD analyses at varying concentration of doping level confirmed that at starting composition (Bi1.6Pbo.4Sr2 RExCa2-xCu3 0 y), the phases Bi(Pb)-2223 and Bi(Pb)-2212 (mixed phases) co-exist in the doped samples. The crystallographic structures underwent a transition from tetragonal (a=b≠c) to orthorhombic (a≠b≠c) as doping concentration of Eu and Yb were increased due to contraction of c-lattice. Eu and Yb were detected in the grains of Eu-doped and Yb-doped Bi(Pb)-2223 superconductor implying that both atoms were successfully doped into the crystal structure of low density Bi(Pb)-2223.
format	Thesis
author	Che Mahmud, Nor Azura
author_facet	Che Mahmud, Nor Azura
author_sort	Che Mahmud, Nor Azura
title	Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud
title_short	Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud
title_full	Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud
title_fullStr	Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud
title_full_unstemmed	Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud
title_sort	synthesis and characterization of low density bi(pb)-2223 high temperature superconductor doped with europium and ytterbium / nor azura che mahmud
publishDate	2016
url	http://ir.uitm.edu.my/id/eprint/27193/ http://ir.uitm.edu.my/id/eprint/27193/1/TM_NOR%20AZURA%20CHE%20MAHMUD%20AS%2016_5.pdf
first_indexed	2023-09-18T23:17:58Z
last_indexed	2023-09-18T23:17:58Z
_version_	1777419239846576128

Synthesis and characterization of low density Bi(Pb)-2223 high temperature superconductor doped with europium and ytterbium / Nor Azura Che Mahmud

Similar Items