Ferromagnetism in Reactive Sputtered Cu0.96Fe0.04O1-\delta Nanocrystalline Films Evidenced by Anomalous Hall Effect
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概要
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Cu0.96Fe0.04O1-\delta nanocrystalline films were fabricated using reactive sputtering at different oxygen partial pressures ($P_{\text{O2}}$). The electrical transport properties of the films were measured in a broad temperature range (10--300 K) under magnetic fields of up to 5 T. Anomalous Hall effect (AHE) of up to 0.4 μ$\Omega$ cm was observed at 10 K and decreased to 0.2 μ$\Omega$ cm at 300 K. The characteristic AHE clearly indicated the existence of ferromagnetism in these materials. The AHE weakened as $P_{\text{O2}}$ increased because the increasing $P_{\text{O2}}$ reduced the fraction of Fe2+ ions, and consequently weakened the double exchange coupling between Fe2+--O2---Cu2+ in the materials.
- 2011-04-25
著者
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Mi Wenbo
Tianjin Key Laboratory Of Low-dimensional Materials Physics And Preparation Technology Institute Of Advanced Materials Physics Faculty Of Science Tianjin University
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Bai Haili
Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, P. R. China
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Zhang Qiang
Image-Characterization Core Laboratory, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23900-6900, Kingdom of Saudi Arabia
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Zhang Bei
Image-Characterization Core Laboratory, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23900-6900, Kingdom of Saudi Arabia
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Zhang Xixiang
Image-Characterization Core Laboratory, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23900-6900, Kingdom of Saudi Arabia
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Mi Wenbo
Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, P. R. China
関連論文
- Ferromagnetism in Reactive Sputtered Cu0.96Fe0.04O1-\delta Nanocrystalline Films Evidenced by Anomalous Hall Effect
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