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Magnetic Properties of Fe-Doped Rutile |
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| Authors: | W. Wang J. Dai J. Tang D.-T. Jiang Y. Chen J. Fang J. He W. Zhou L. Spinu |
| Affiliation: | (1) Department of Physics, University of New Orleans, New Orleans, Louisiana, 70148;(2) Shanghai Zhangjiang High Tech Park, Co., Ltd., Shanghai, People's Republic of China;(3) Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan, Canada, S7N OX4;(4) Department of Metallic Materials Engineering, Sichuan University, 610065 Chengdu, People's Republic of China;(5) Advanced Materials Research Institute, University of New Orleans, New Orleans, Louisiana, 70148 |
| Abstract: | Ball-milling method was applied to dissolve Fe into titanium dioxide (TiO2). X-ray diffraction indicated the starting anatase changed to a rutile-type structure with oxygen deficiency after ball milling. Transmission electron microscopy and X-ray absorption experiments were conducted to examine the possible existence of magnetic impurities in the ball-milled powders after they were leached in HCl solutions. Temperature dependence of the resistivity shows semiconducting behavior and the magnetic hysteresis loops at 5 and 300 K exhibit ferromagnetic characteristics. Fe-doped TiO2 films were also prepared by pulsed laser deposition. The magnetic properties of the films are discussed. |
| Keywords: | magnetic semiconductor rutile, TiO2 ball milling pulsed laser deposition |
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