Magnetization and Curie Temperature of Ilmenite–Hematite Ceramics |
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| Authors: | Liliana Navarrete Jian Dou Drew M Allen Rainer Schad Periaswamy Padmini Pranoti Kale RK Pandey |
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| Affiliation: | Department of Physics and Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, Alabama 35487; Department of Electrical and Computer Engineering and Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, Alabama 35487 |
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| Abstract: | The morphology, structure, and magnetic properties of the magnetic semiconductor ceramic Ilmenite–Hematite (IH), (1? x )FeTiO3– x Fe2O3, were studied as a function of the composition x . The magnetic ordering temperatures that we observed were consistently higher than those reported previously and were, for most of the composition range, above room temperature. We rule out the formation of Fe clusters as the origin of the magnetic properties. These magnetic properties of IH ceramics, in combination with their semiconducting characteristics, render them promising for spin-electronic applications. |
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