Giant Hall effect in (GaAs)Fe granular films |
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| Authors: | Z.M. Wang F. Xu H. Zhang Q.Y. Xu Q. Zhao P. Lievens |
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| Affiliation: | aInstitute of Mechanical Engineering & Material Department, Nanjing University of Science and Technology, Nanjing 210094, China;bLaboratorium voor Vaste-Stoffysica en Magnetisme & IKS KULeuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium;cNational Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;dPhysics Department of Southeast University, Nanjing 211189, China |
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| Abstract: | A series of (GaAs)1 − xFex (x: volume fraction) films with Fe granules embedded in GaAs matrix were prepared by magnetron sputtering. Hall Effect of the films was characterized. The largest saturated Hall resistivity of  was observed in (GaAs)30Fe70 film at room temperature, which is over 2 orders larger than that of pure Fe, about 1 order larger than that of (NiFe)–(Al2O3) and (NiCo)–(SiO2) granular films prepared under the same preparation conditions, and 150% larger than that of Ge30Fe70. |
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| Keywords: | Giant Hall effect Granular film |
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