Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique

A new manganate perovskite (La0.5-xPrxBa0.5)(Mn0.5Ti0.5)O3 has been prepared by ceramic solid-state technique at sintering temperature 1300 °C for 24 hours. The x concentration of Praseodymiun (Pr) in molar proportion in A site has been varied as x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 007, 0....

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Main Author:	Alias, Nor Hayati
Format:	Thesis
Language:	English English
Published:	2009
Subjects:	Perovskite Solids - Magnetic properties Dielectrics - Magnetic properties
Online Access:	http://psasir.upm.edu.my/id/eprint/11970/1/FS_2009_37_A.pdf
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spelling	my-upm-ir.119702013-05-27T07:50:31Z Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique 2009-10 Alias, Nor Hayati A new manganate perovskite (La0.5-xPrxBa0.5)(Mn0.5Ti0.5)O3 has been prepared by ceramic solid-state technique at sintering temperature 1300 °C for 24 hours. The x concentration of Praseodymiun (Pr) in molar proportion in A site has been varied as x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 007, 0.08, 0.09, 0.1, 0.2, 0.3 and 0.4. The dielectric properties of the synthesized materials have been studied at frequency ranging from 5 Hz to 1 MHz from room temperature up to 200 °C. Furthermore, analyses have been carried out to determine the structural, magnetic and dielectric electrical properties of the synthesized material as a candidate of multiferroic material. Pr (Praseodymium) addition would promote liquid phase sintering in the synthesized samples. This enhanced the agglomeration and porosity formation in the bulk volume. The defects and conducting liquid present would generate traps that produce negative permittivity response at interfacial/space charge frequency region due to delay in transient current or situation in which inertial conducting current of the trap presents, exceeding the charging-discharging current component. The XRD (X-Ray Diffractometry) results indicate all samples possess a single phase monoclinic structure with space group P112. Multiferroic magnetodielectric coupling in material with ferromagnetic and high dielectric constant ( > 30) is able to achieve in sampel with x molar concentration = 0.07 at room temperature. The dielectric value obtained is 176 with loss tan δ value 0.62. SEM/EDX analysis of the sample shows fine grain microstructure and high manganese (Mn) content ( > 0.6 wt %) which favours the double exchange mechanism. Perovskite Solids - Magnetic properties Dielectrics - Magnetic properties 2009-10 Thesis http://psasir.upm.edu.my/id/eprint/11970/ http://psasir.upm.edu.my/id/eprint/11970/1/FS_2009_37_A.pdf application/pdf en public masters Universiti Putra Malaysia Perovskite Solids - Magnetic properties Dielectrics - Magnetic properties Faculty Of Science English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Perovskite Solids - Magnetic properties Dielectrics - Magnetic properties
spellingShingle	Perovskite Solids - Magnetic properties Dielectrics - Magnetic properties Alias, Nor Hayati Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique
description	A new manganate perovskite (La0.5-xPrxBa0.5)(Mn0.5Ti0.5)O3 has been prepared by ceramic solid-state technique at sintering temperature 1300 °C for 24 hours. The x concentration of Praseodymiun (Pr) in molar proportion in A site has been varied as x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 007, 0.08, 0.09, 0.1, 0.2, 0.3 and 0.4. The dielectric properties of the synthesized materials have been studied at frequency ranging from 5 Hz to 1 MHz from room temperature up to 200 °C. Furthermore, analyses have been carried out to determine the structural, magnetic and dielectric electrical properties of the synthesized material as a candidate of multiferroic material. Pr (Praseodymium) addition would promote liquid phase sintering in the synthesized samples. This enhanced the agglomeration and porosity formation in the bulk volume. The defects and conducting liquid present would generate traps that produce negative permittivity response at interfacial/space charge frequency region due to delay in transient current or situation in which inertial conducting current of the trap presents, exceeding the charging-discharging current component. The XRD (X-Ray Diffractometry) results indicate all samples possess a single phase monoclinic structure with space group P112. Multiferroic magnetodielectric coupling in material with ferromagnetic and high dielectric constant ( > 30) is able to achieve in sampel with x molar concentration = 0.07 at room temperature. The dielectric value obtained is 176 with loss tan δ value 0.62. SEM/EDX analysis of the sample shows fine grain microstructure and high manganese (Mn) content ( > 0.6 wt %) which favours the double exchange mechanism.
format	Thesis
qualification_level	Master's degree
author	Alias, Nor Hayati
author_facet	Alias, Nor Hayati
author_sort	Alias, Nor Hayati
title	Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique
title_short	Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique
title_full	Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique
title_fullStr	Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique
title_full_unstemmed	Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique
title_sort	dielectric and magnetic characterization of (la0.5-xprxba0.5)(mn0.5ti0.5)o3 perovskite as a multiferroic material synthesized via solid state technique
granting_institution	Universiti Putra Malaysia
granting_department	Faculty Of Science
publishDate	2009
url	http://psasir.upm.edu.my/id/eprint/11970/1/FS_2009_37_A.pdf
_version_	1747811286614278144

Dielectric And Magnetic Characterization Of (La0.5-Xprxba0.5)(Mn0.5ti0.5)O3 Perovskite As A Multiferroic Material Synthesized Via Solid State Technique

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