Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties
BiFeO3 is the only multiferroic materials that present both spontaneous magnetic and electric polarizations at room temperature. However, the weak magnetization (almost zero) have been measured in bulk BiFeO3 materials which prevent it to be applied in multiferroic based devices. Therefore, the modi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-12-01
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| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379719318170 |
| _version_ | 1818619263945015296 |
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| author | Muhammad Safwan Sazali Muhamad Kamil Yaakob Zakiah Mohamed Mohamad Hafiz Mamat Oskar Hasdinor Hassan Noor Haida Mohd Kaus Muhd Zu Azhan Yahya |
| author_facet | Muhammad Safwan Sazali Muhamad Kamil Yaakob Zakiah Mohamed Mohamad Hafiz Mamat Oskar Hasdinor Hassan Noor Haida Mohd Kaus Muhd Zu Azhan Yahya |
| author_sort | Muhammad Safwan Sazali |
| collection | DOAJ |
| description | BiFeO3 is the only multiferroic materials that present both spontaneous magnetic and electric polarizations at room temperature. However, the weak magnetization (almost zero) have been measured in bulk BiFeO3 materials which prevent it to be applied in multiferroic based devices. Therefore, the modification on the crystal structure of BiFeO3 materials are required to enhance its magnetization. In this work, for the first time BiFeO3 materials with and without Chitosan are successfully synthesised via a hydrothermal process. The X-ray diffraction data for both samples indicated that the samples have a single phase belonging to R3c space group with perovskite rhombohedral structure. Moreover, Rietveld refined X-ray diffraction (XRD) analysis suggested significant changes in the crystal structures of BiFeO3 with the addition of Chitosan. Scanning Electron Microscope (SEM) also demonstrated different morphologies of BiFeO3 where the sizes of the BiFeO3 is suggested to increased with the addition of Chitosan. Furthermore, UV–vis absorbance characterisation estimated the value of a direct energy band gap at 1.35 eV and 1.16 eV for BiFeO3 and Chitosan-assisted BiFeO3, respectively. The magnetisation of multiferroic BiFeO3 also improved when Chitosan was introduced in the hydrothermal process. Keywords: BiFeO3, Polymers, Chitosan, Hydrothermal, Structural, Magnetic properties |
| first_indexed | 2024-12-16T17:34:43Z |
| format | Article |
| id | doaj.art-171894447da24953af4b24622ffff7b1 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-16T17:34:43Z |
| publishDate | 2019-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-171894447da24953af4b24622ffff7b12022-12-21T22:22:50ZengElsevierResults in Physics2211-37972019-12-0115Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical propertiesMuhammad Safwan Sazali0Muhamad Kamil Yaakob1Zakiah Mohamed2Mohamad Hafiz Mamat3Oskar Hasdinor Hassan4Noor Haida Mohd Kaus5Muhd Zu Azhan Yahya6Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Ionics Materials & Devices (iMADE) Research Laboratory, Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, MalaysiaFaculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Ionics Materials & Devices (iMADE) Research Laboratory, Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Corresponding author at: Faculty of Applied Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, MalaysiaNANO-ElecTronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, MalaysiaIonics Materials & Devices (iMADE) Research Laboratory, Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Faculty of Art and Design, Universiti Teknologi MARA, 40450 Shah Alam, MalaysiaNano | Hybrid | Materials Research Group, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, MalaysiaIonics Materials & Devices (iMADE) Research Laboratory, Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Faculty of Defence Science and Technology, Universiti Pertahanan Nasional Malaysia, 57000 Kuala Lumpur, MalaysiaBiFeO3 is the only multiferroic materials that present both spontaneous magnetic and electric polarizations at room temperature. However, the weak magnetization (almost zero) have been measured in bulk BiFeO3 materials which prevent it to be applied in multiferroic based devices. Therefore, the modification on the crystal structure of BiFeO3 materials are required to enhance its magnetization. In this work, for the first time BiFeO3 materials with and without Chitosan are successfully synthesised via a hydrothermal process. The X-ray diffraction data for both samples indicated that the samples have a single phase belonging to R3c space group with perovskite rhombohedral structure. Moreover, Rietveld refined X-ray diffraction (XRD) analysis suggested significant changes in the crystal structures of BiFeO3 with the addition of Chitosan. Scanning Electron Microscope (SEM) also demonstrated different morphologies of BiFeO3 where the sizes of the BiFeO3 is suggested to increased with the addition of Chitosan. Furthermore, UV–vis absorbance characterisation estimated the value of a direct energy band gap at 1.35 eV and 1.16 eV for BiFeO3 and Chitosan-assisted BiFeO3, respectively. The magnetisation of multiferroic BiFeO3 also improved when Chitosan was introduced in the hydrothermal process. Keywords: BiFeO3, Polymers, Chitosan, Hydrothermal, Structural, Magnetic propertieshttp://www.sciencedirect.com/science/article/pii/S2211379719318170 |
| spellingShingle | Muhammad Safwan Sazali Muhamad Kamil Yaakob Zakiah Mohamed Mohamad Hafiz Mamat Oskar Hasdinor Hassan Noor Haida Mohd Kaus Muhd Zu Azhan Yahya Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties Results in Physics |
| title | Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties |
| title_full | Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties |
| title_fullStr | Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties |
| title_full_unstemmed | Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties |
| title_short | Chitosan-assisted hydrothermal synthesis of multiferroic BiFeO3: Effects on structural, magnetic and optical properties |
| title_sort | chitosan assisted hydrothermal synthesis of multiferroic bifeo3 effects on structural magnetic and optical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2211379719318170 |
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