Ferromagnetic order in substitutional Fe-doped In2O3 powder
| Autor: | M.A. Alkhunayfir, O.M. Lemine, M. Bououdina, Ali Z. Alanzi, Kadi Y. Museery, R. Alhathlool, Marzook S. Alshammari |
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| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Materials science chemistry.chemical_element Sintering 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Bixbyite 01 natural sciences Oxygen Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Crystallography chemistry Ferromagnetism Fe doped Lattice (order) 0103 physical sciences 010306 general physics 0210 nano-technology Ferromagnetic order |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 108:253-256 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2018.11.030 |
| Popis: | We report an experimental investigation of the room-temperature ferromagnetism of an Fe-doped In 2O3 system. (In1−xFex)2O3(x = 0.00, 0.02, 0.06,0.10,0.14 or 0.18) powders were prepared by a standard solid-state reaction method followed by sintering in air at 1200 °C for 48 h. The influence of Fe-doping concentration on the structural and magnetic properties of the In 2O3 samples was studied. X-ray diffraction analysis reveals that Fe ions are incorporated into the In 3+ sites of the In2O3 lattice without altering the cubic bixbyite structure. Magnetic characterization shows ferromagnetic behavior at room temperature for all the Fe-doped In2O3 samples. The observed ferromagnetism is attributed to the oxygen vacancies induced by substitution of Fe into In 3+ sites and vacuum annealing. A model of ferromagnetic exchange interactions was proposed to explain the ferromagnetism in this system. |
| Databáze: | OpenAIRE |
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