Room-temperature ferromagnetism in Ni-doped TiO2 diluted magnetic semiconductor thin films
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2017
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| _version_ | 1876475691116003328 |
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| author | Bushra Parveen |
| author_facet | Bushra Parveen |
| contents | Room-temperature ferromagnetism in Ni-doped TiO2 diluted magnetic semiconductor thin films Bushra Parveen Mahmood ul-Hassan Zeeshan Khalid Saira Riaz Shahzad Naseem Ingeniería Room Solid Dip coating state reaction Vibrating sample magnetometer We report undoped and Ni-doped TiO 2 ( x Ni = 0.00, 0.50, 1.00, 1.50, 2.00 and 2.50 wt.%) thin films fabricated on glass substrates by using a combination of solid-state reaction and dip coating techniques. The structural properties are observed by X-ray diffraction (XRD), which have depicted that annealing at 650 ◦ C results in rutile Ni-doped TiO 2 as a major phase along with a minor anatase phase. The surface morphology of the deposited thin films, as measured by scanning electron microscopy (SEM), indicates granular spherical shaped nanostructures. Room-temperature ferromagnetism (RTFM) has been illustrated by all the grown thin films, as elucidated by vibrating sample magnetometer (VSM). Although Ni content has no pronounced effect on the crystallinity that indicates a substitutional replacement of Ni in TiO 2 lattice, however, Ni content is observed to influence the ferromagnetic behavior. Therefore, the present study signifies the potential spintronic applications of Ni-doped TiO 2 diluted magnetic semiconductors, fabricated by a low-cost method, as it exhibits RTFM with nanograins at the surface. © 2017 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ). 2017 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47450569005 https://www.redalyc.org/journal/474/47450569005/ https://www.redalyc.org/journal/474/47450569005/html/ https://www.redalyc.org/journal/474/47450569005/47450569005.epub https://www.redalyc.org/journal/474/47450569005/movil en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.2 Vol.15 |
| format | Artículo científico |
| id | redalyc_47450569005 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Room-temperature ferromagnetism in Ni-doped TiO2 diluted magnetic semiconductor thin films Bushra Parveen Ingeniería Room Solid Dip coating state reaction Vibrating sample magnetometer Room-temperature ferromagnetism in Ni-doped TiO2 diluted magnetic semiconductor thin films Bushra Parveen Mahmood ul-Hassan Zeeshan Khalid Saira Riaz Shahzad Naseem Ingeniería Room Solid Dip coating state reaction Vibrating sample magnetometer We report undoped and Ni-doped TiO 2 ( x Ni = 0.00, 0.50, 1.00, 1.50, 2.00 and 2.50 wt.%) thin films fabricated on glass substrates by using a combination of solid-state reaction and dip coating techniques. The structural properties are observed by X-ray diffraction (XRD), which have depicted that annealing at 650 ◦ C results in rutile Ni-doped TiO 2 as a major phase along with a minor anatase phase. The surface morphology of the deposited thin films, as measured by scanning electron microscopy (SEM), indicates granular spherical shaped nanostructures. Room-temperature ferromagnetism (RTFM) has been illustrated by all the grown thin films, as elucidated by vibrating sample magnetometer (VSM). Although Ni content has no pronounced effect on the crystallinity that indicates a substitutional replacement of Ni in TiO 2 lattice, however, Ni content is observed to influence the ferromagnetic behavior. Therefore, the present study signifies the potential spintronic applications of Ni-doped TiO 2 diluted magnetic semiconductors, fabricated by a low-cost method, as it exhibits RTFM with nanograins at the surface. © 2017 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ). 2017 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47450569005 https://www.redalyc.org/journal/474/47450569005/ https://www.redalyc.org/journal/474/47450569005/html/ https://www.redalyc.org/journal/474/47450569005/47450569005.epub https://www.redalyc.org/journal/474/47450569005/movil en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.2 Vol.15 |
| title | Room-temperature ferromagnetism in Ni-doped TiO2 diluted magnetic semiconductor thin films |
| topic | Ingeniería Room Solid Dip coating state reaction Vibrating sample magnetometer |
| url | https://www.redalyc.org/articulo.oa?id=47450569005 https://www.redalyc.org/journal/474/47450569005/ https://www.redalyc.org/journal/474/47450569005/html/ https://www.redalyc.org/journal/474/47450569005/47450569005.epub https://www.redalyc.org/journal/474/47450569005/movil |