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Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite

. Colossal magnetoresistive (CMR) materials have been widely studied because of their huge potential in spintronic technology. An introduction of secondary phase to the manganite matrix is able to improve the low field magnetoresistance (LFMR). This method is favoured by recent research works as...

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Main Authors: Lau, Lik Nguong, Lim, Kean Pah, Awang Kechik, Mohd Mustafa, Chen, Soo Kien, Ibrahim, Noor Baayah
Format: Article
Published: Scientific.Net 2020
Online Access:http://psasir.upm.edu.my/id/eprint/85947/
https://www.scientific.net/SSP.307.9
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spelling my.upm.eprints.859472023-11-28T07:25:05Z http://psasir.upm.edu.my/id/eprint/85947/ Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite Lau, Lik Nguong Lim, Kean Pah Awang Kechik, Mohd Mustafa Chen, Soo Kien Ibrahim, Noor Baayah . Colossal magnetoresistive (CMR) materials have been widely studied because of their huge potential in spintronic technology. An introduction of secondary phase to the manganite matrix is able to improve the low field magnetoresistance (LFMR). This method is favoured by recent research works as it requires a lower magnetic field compared to intrinsic magnetoresistance. Structural, magnetic properties and magnetotransport properties of polycrystalline (1-x) La0.67Ca0.33MnO3 (LCMO): x TiO2 composites where x = 0.00, 0.05, 0.10, 0.15 and 0.20 were investigated in this work. Polycrystalline La0.67Ca0.33MnO3 (LCMO) was synthesized via sol-gel method and pre-sintered at 800 ºC before appending with nano-sized TiO2. All samples are in LCMO phase having an orthorhombic structure with space group Pnma. The crystal structural parameter was studied by using Rietveld refinement. As the TiO2 content increases, the magnetization is getting higher as observed via vibrating sample magnetometer (VSM) analysis at room temperature. Magnetotransport properties of the pure LCMO sample have been studied from 80 – 220 K. The LFMR is enhanced as the temperature drops. The results have shown LCMO: TiO2 manganite composite is an excellent candidate for future magnetic sensors and memory devices. Scientific.Net 2020 Article PeerReviewed Lau, Lik Nguong and Lim, Kean Pah and Awang Kechik, Mohd Mustafa and Chen, Soo Kien and Ibrahim, Noor Baayah (2020) Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite. Solid State Phenomena, 307. pp. 9-14. ISSN 1012-0394 https://www.scientific.net/SSP.307.9 10.4028/www.scientific.net/SSP.307.9
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description . Colossal magnetoresistive (CMR) materials have been widely studied because of their huge potential in spintronic technology. An introduction of secondary phase to the manganite matrix is able to improve the low field magnetoresistance (LFMR). This method is favoured by recent research works as it requires a lower magnetic field compared to intrinsic magnetoresistance. Structural, magnetic properties and magnetotransport properties of polycrystalline (1-x) La0.67Ca0.33MnO3 (LCMO): x TiO2 composites where x = 0.00, 0.05, 0.10, 0.15 and 0.20 were investigated in this work. Polycrystalline La0.67Ca0.33MnO3 (LCMO) was synthesized via sol-gel method and pre-sintered at 800 ºC before appending with nano-sized TiO2. All samples are in LCMO phase having an orthorhombic structure with space group Pnma. The crystal structural parameter was studied by using Rietveld refinement. As the TiO2 content increases, the magnetization is getting higher as observed via vibrating sample magnetometer (VSM) analysis at room temperature. Magnetotransport properties of the pure LCMO sample have been studied from 80 – 220 K. The LFMR is enhanced as the temperature drops. The results have shown LCMO: TiO2 manganite composite is an excellent candidate for future magnetic sensors and memory devices.
format Article
author Lau, Lik Nguong
Lim, Kean Pah
Awang Kechik, Mohd Mustafa
Chen, Soo Kien
Ibrahim, Noor Baayah
spellingShingle Lau, Lik Nguong
Lim, Kean Pah
Awang Kechik, Mohd Mustafa
Chen, Soo Kien
Ibrahim, Noor Baayah
Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite
author_facet Lau, Lik Nguong
Lim, Kean Pah
Awang Kechik, Mohd Mustafa
Chen, Soo Kien
Ibrahim, Noor Baayah
author_sort Lau, Lik Nguong
title Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite
title_short Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite
title_full Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite
title_fullStr Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite
title_full_unstemmed Structural, magnetic and magnetotransport properties of sol-gel synthesized La0.67Ca0.33MnO3: TiO2 nanocomposite
title_sort structural, magnetic and magnetotransport properties of sol-gel synthesized la0.67ca0.33mno3: tio2 nanocomposite
publisher Scientific.Net
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/85947/
https://www.scientific.net/SSP.307.9
_version_ 1783879927861346304
score 13.211869

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