Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method
The present study reports the structural and magnetic characterization of spinel zinc chromite (ZnCr2O4) nanocrystallines synthesized by thermal treatment method. The samples were calcined at different temperatures in the range of 773 to 973 K. Polyvinylpyrrolidone was used to control the agglomerat...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Hindawi Publishing Corporation
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/35500/ http://psasir.upm.edu.my/id/eprint/35500/1/Structural%2C%20Optical%2C%20and%20Magnetic%20Characterization.pdf |
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| author | Gene, Salahudeen A. Saion, Elias Shaari, Abdul Halim Ahmad Kamarudin, Mazliana Al-Hada, Naif Mohammed Kharazmi, Alireza |
| author_facet | Gene, Salahudeen A. Saion, Elias Shaari, Abdul Halim Ahmad Kamarudin, Mazliana Al-Hada, Naif Mohammed Kharazmi, Alireza |
| author_sort | Gene, Salahudeen A. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The present study reports the structural and magnetic characterization of spinel zinc chromite (ZnCr2O4) nanocrystallines synthesized by thermal treatment method. The samples were calcined at different temperatures in the range of 773 to 973 K. Polyvinylpyrrolidone was used to control the agglomeration of the nanoparticles. The average particle size of the synthesized nanocrystals was determined by powder X-ray diffraction which shows that the crystallite size increases from 19 nm at 773 K to 24 nm at 973 K and the result was in good agreement with the transmission electron microscopy images. The elemental composition of the samples was determined by energy dispersed X-ray spectroscopy which confirmed the presence of Zn, Cr, and O in the final products. Fourier transform infrared spectroscopy also confirmed the presence of metal oxide bands for all the samples calcined at different temperature. The band gap energy was calculated from UV-vis reflectance spectra using the Kubelka-Munk function and the band gap energy of the samples was found to decrease from 4.03 eV at 773 K to 3.89 eV at 973 K. The magnetic properties were also demonstrated by electron spin resonance spectroscopy, the presence of unpaired electrons was confirmed, and the resonant magnetic field and the of the calcined samples were also studied. |
| first_indexed | 2025-11-15T09:28:41Z |
| format | Article |
| id | upm-35500 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:28:41Z |
| publishDate | 2014 |
| publisher | Hindawi Publishing Corporation |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-355002016-01-11T04:57:00Z http://psasir.upm.edu.my/id/eprint/35500/ Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method Gene, Salahudeen A. Saion, Elias Shaari, Abdul Halim Ahmad Kamarudin, Mazliana Al-Hada, Naif Mohammed Kharazmi, Alireza The present study reports the structural and magnetic characterization of spinel zinc chromite (ZnCr2O4) nanocrystallines synthesized by thermal treatment method. The samples were calcined at different temperatures in the range of 773 to 973 K. Polyvinylpyrrolidone was used to control the agglomeration of the nanoparticles. The average particle size of the synthesized nanocrystals was determined by powder X-ray diffraction which shows that the crystallite size increases from 19 nm at 773 K to 24 nm at 973 K and the result was in good agreement with the transmission electron microscopy images. The elemental composition of the samples was determined by energy dispersed X-ray spectroscopy which confirmed the presence of Zn, Cr, and O in the final products. Fourier transform infrared spectroscopy also confirmed the presence of metal oxide bands for all the samples calcined at different temperature. The band gap energy was calculated from UV-vis reflectance spectra using the Kubelka-Munk function and the band gap energy of the samples was found to decrease from 4.03 eV at 773 K to 3.89 eV at 973 K. The magnetic properties were also demonstrated by electron spin resonance spectroscopy, the presence of unpaired electrons was confirmed, and the resonant magnetic field and the of the calcined samples were also studied. Hindawi Publishing Corporation 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/35500/1/Structural%2C%20Optical%2C%20and%20Magnetic%20Characterization.pdf Gene, Salahudeen A. and Saion, Elias and Shaari, Abdul Halim and Ahmad Kamarudin, Mazliana and Al-Hada, Naif Mohammed and Kharazmi, Alireza (2014) Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method. Journal of Nanomaterials, 2014. art. no. 416765. pp. 1-7. ISSN 1687-4110; ESSN: 1687-4129 http://www.hindawi.com/journals/jnm/2014/416765/abs/ 10.1155/2014/416765 |
| spellingShingle | Gene, Salahudeen A. Saion, Elias Shaari, Abdul Halim Ahmad Kamarudin, Mazliana Al-Hada, Naif Mohammed Kharazmi, Alireza Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| title | Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| title_full | Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| title_fullStr | Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| title_full_unstemmed | Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| title_short | Structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| title_sort | structural, optical, and magnetic characterization of spinel zinc chromite nanocrystallines synthesised by thermal treatment method |
| url | http://psasir.upm.edu.my/id/eprint/35500/ http://psasir.upm.edu.my/id/eprint/35500/ http://psasir.upm.edu.my/id/eprint/35500/ http://psasir.upm.edu.my/id/eprint/35500/1/Structural%2C%20Optical%2C%20and%20Magnetic%20Characterization.pdf |