Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x
The structural, microstructure and magnetic properties of polycrystalline (La0.67Ca0.33MnO3)1-x/(α-Fe2O3)x composites where x = 0%, 5%, 10%, 15%, 20% were investigated. Polycrystalline La0.67Ca0.33MnO3 (LCMO) was synthesized via solid state reaction at high sintering temperature while for nano-sized...
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| Format: | Article |
| Language: | English |
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Faculty of Science, Universiti Putra Malaysia
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/46405/ http://psasir.upm.edu.my/id/eprint/46405/1/Structure%2C%20microstructure%20and%20magnetic%20properties%20study%20of%20ceramic%20composite.pdf |
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| author | Wan Jusoh, W. N. W. Lim, K. P. Awang Kechik, M. M. Halim, S. A. Ng, S. W. |
| author_facet | Wan Jusoh, W. N. W. Lim, K. P. Awang Kechik, M. M. Halim, S. A. Ng, S. W. |
| author_sort | Wan Jusoh, W. N. W. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The structural, microstructure and magnetic properties of polycrystalline (La0.67Ca0.33MnO3)1-x/(α-Fe2O3)x composites where x = 0%, 5%, 10%, 15%, 20% were investigated. Polycrystalline La0.67Ca0.33MnO3 (LCMO) was synthesized via solid state reaction at high sintering temperature while for nano-sized Fe2O3 (20-50 nm) a commercial product was used. X-ray diffraction (XRD) patterns show that parent compound of La0.67Ca0.33MnO3 is a single phase without any detectable impurity and give orthorhombic structure with space group Pbnm (62) while α- Fe2O3 is in cubic form with space group I a -3 (206). As Fe2O3 content x increases, the magnetization M values decrease as observed via Vibrating Sample Magnetometer (VSM) at room temperature. Higher magnetization is noticed inpure LCMO rather than in LCMO composites added with α- Fe2O3. However, Scanning Electron Microscopy (SEM) shows that nano-sized Fe2O3 mainly distributed at the grain boundary of La0.67Ca0.33MnO3. The particle size of LCMO composites shows fluctuation; meanwhile particle size of α- Fe2O3 shows almost similar values except for sample with the addition of 15% of α- Fe2O3 where lowest particle size with higher coercivity and retentivity are observed. As compared to pure La0.67Ca0.33MnO3, Fe2O3 doping level at the grain boundaries can be assumed to modify the magnetic properties of La0.67Ca0.33MnO3. |
| first_indexed | 2025-11-15T10:09:43Z |
| format | Article |
| id | upm-46405 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:09:43Z |
| publishDate | 2015 |
| publisher | Faculty of Science, Universiti Putra Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-464052022-07-07T02:23:46Z http://psasir.upm.edu.my/id/eprint/46405/ Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x Wan Jusoh, W. N. W. Lim, K. P. Awang Kechik, M. M. Halim, S. A. Ng, S. W. The structural, microstructure and magnetic properties of polycrystalline (La0.67Ca0.33MnO3)1-x/(α-Fe2O3)x composites where x = 0%, 5%, 10%, 15%, 20% were investigated. Polycrystalline La0.67Ca0.33MnO3 (LCMO) was synthesized via solid state reaction at high sintering temperature while for nano-sized Fe2O3 (20-50 nm) a commercial product was used. X-ray diffraction (XRD) patterns show that parent compound of La0.67Ca0.33MnO3 is a single phase without any detectable impurity and give orthorhombic structure with space group Pbnm (62) while α- Fe2O3 is in cubic form with space group I a -3 (206). As Fe2O3 content x increases, the magnetization M values decrease as observed via Vibrating Sample Magnetometer (VSM) at room temperature. Higher magnetization is noticed inpure LCMO rather than in LCMO composites added with α- Fe2O3. However, Scanning Electron Microscopy (SEM) shows that nano-sized Fe2O3 mainly distributed at the grain boundary of La0.67Ca0.33MnO3. The particle size of LCMO composites shows fluctuation; meanwhile particle size of α- Fe2O3 shows almost similar values except for sample with the addition of 15% of α- Fe2O3 where lowest particle size with higher coercivity and retentivity are observed. As compared to pure La0.67Ca0.33MnO3, Fe2O3 doping level at the grain boundaries can be assumed to modify the magnetic properties of La0.67Ca0.33MnO3. Faculty of Science, Universiti Putra Malaysia 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46405/1/Structure%2C%20microstructure%20and%20magnetic%20properties%20study%20of%20ceramic%20composite.pdf Wan Jusoh, W. N. W. and Lim, K. P. and Awang Kechik, M. M. and Halim, S. A. and Ng, S. W. (2015) Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x. Solid State Science and Technology, 23 (1 & 2). pp. 99-107. ISSN 0128-7389 https://myjms.mohe.gov.my/index.php/masshp/issue/view/389 |
| spellingShingle | Wan Jusoh, W. N. W. Lim, K. P. Awang Kechik, M. M. Halim, S. A. Ng, S. W. Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x |
| title | Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x |
| title_full | Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x |
| title_fullStr | Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x |
| title_full_unstemmed | Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x |
| title_short | Structure, microstructure and magnetic properties study of ceramic composite (La0.67Ca0.33MnO3)1-x/(Nano-sizedα-Fe2O3)x |
| title_sort | structure, microstructure and magnetic properties study of ceramic composite (la0.67ca0.33mno3)1-x/(nano-sizedα-fe2o3)x |
| url | http://psasir.upm.edu.my/id/eprint/46405/ http://psasir.upm.edu.my/id/eprint/46405/ http://psasir.upm.edu.my/id/eprint/46405/1/Structure%2C%20microstructure%20and%20magnetic%20properties%20study%20of%20ceramic%20composite.pdf |