Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin

Recent studies in manganites suggested that the changes in resistivity upon the application of higher current, known as the electroresistance (ER) effect is highly influenced by the lattice distortion and the presence of inhomogeneities. However, such effects are not fully understood and require fur...

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Main Author:	Zahrin, Nur Amirah
Format:	Thesis
Language:	English
Published:	2023
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	https://ir.uitm.edu.my/id/eprint/82789/1/82789.pdf
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id	my-uitm-ir.82789
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spelling	my-uitm-ir.827892024-01-15T08:57:08Z Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin 2023 Zahrin, Nur Amirah TK Electrical engineering. Electronics. Nuclear engineering Recent studies in manganites suggested that the changes in resistivity upon the application of higher current, known as the electroresistance (ER) effect is highly influenced by the lattice distortion and the presence of inhomogeneities. However, such effects are not fully understood and require further investigation. Hence, both effects which can be induced by A-site disorder (σ2) and hybridization effect is further investigated in La0.8Na0.2-xLixNa0.2MnO3 (x = 0 – 0.15) and La0.8-xBixNa0.2MnO3 (x = 0 – 0.20) manganites, respectively which was prepared via solid-state method and the structural, magnetic properties and the ER behaviour is determined. For Li-substituted series, the  vs T curve revealed that all samples exhibited a metal-insulator transition behavior and the metal-insulator transition temperature, TMI decreased from 270 K (x=0) to 255 K (x=0.15) with the increase of σ2 from 2.074 x 10-4 Å2 (x=0) to 1.107 x 10-2 Å2 (x=0.15). Both samples of x=0.10 and x=0.15 exhibited ferromagnetic – paramagnetic transition behaviour and a decrease of Curie temperature, TC. 2023 Thesis https://ir.uitm.edu.my/id/eprint/82789/ https://ir.uitm.edu.my/id/eprint/82789/1/82789.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences Ibrahim, Norazila
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ibrahim, Norazila
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Zahrin, Nur Amirah Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin
description	Recent studies in manganites suggested that the changes in resistivity upon the application of higher current, known as the electroresistance (ER) effect is highly influenced by the lattice distortion and the presence of inhomogeneities. However, such effects are not fully understood and require further investigation. Hence, both effects which can be induced by A-site disorder (σ2) and hybridization effect is further investigated in La0.8Na0.2-xLixNa0.2MnO3 (x = 0 – 0.15) and La0.8-xBixNa0.2MnO3 (x = 0 – 0.20) manganites, respectively which was prepared via solid-state method and the structural, magnetic properties and the ER behaviour is determined. For Li-substituted series, the  vs T curve revealed that all samples exhibited a metal-insulator transition behavior and the metal-insulator transition temperature, TMI decreased from 270 K (x=0) to 255 K (x=0.15) with the increase of σ2 from 2.074 x 10-4 Å2 (x=0) to 1.107 x 10-2 Å2 (x=0.15). Both samples of x=0.10 and x=0.15 exhibited ferromagnetic – paramagnetic transition behaviour and a decrease of Curie temperature, TC.
format	Thesis
qualification_level	Master's degree
author	Zahrin, Nur Amirah
author_facet	Zahrin, Nur Amirah
author_sort	Zahrin, Nur Amirah
title	Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin
title_short	Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin
title_full	Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin
title_fullStr	Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin
title_full_unstemmed	Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin
title_sort	effects of li+ and bi3+ substitution on structural, magnetic properties and electroresistance behaviours of la0.8na0.2mno3 manganites / nur amirah zahrin
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Sciences
publishDate	2023
url	https://ir.uitm.edu.my/id/eprint/82789/1/82789.pdf
_version_	1794191946641571840

Effects of Li+ and Bi3+ substitution on structural, magnetic properties and electroresistance behaviours of La0.8Na0.2MnO3 manganites / Nur Amirah Zahrin

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