| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Tb doping induced enhancement of anomalous Hall effect in NiFe films |
| Zhu Jia-Peng (朱嘉鹏)a, Ma Li (马丽)a, Zhou Shi-Ming (周仕明)a, Miao Jun (苗君)b, Jiang Yong (姜勇)b |
a Shanghai Key Laboratory of Special Artificial Microstructure, Pohl Institute of Solid State Physics, and School of Physics Science and Engineering, Tongji University, Shanghai 200092, China;
b State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract Tbx(Ni0.8Fe0.2)1-x films with x≤0.14 are fabricated and the anomalous Hall effect is studied. The intrinsic anomalous Hall conductivity and the extrinsic one from the impurity and phonon induced scattering both increase with increasing x. The enhancement of the intrinsic anomalous Hall conductivity is ascribed to both the weak spin-orbit coupling enhancement and the Fermi level shift. The enhancement of the extrinsic term comes from the changes of both Fermi level and impurity distribution. In contrast, the in-plane and the out-of-plane uniaxial anisotropies in the TbNiFe films change little with x. The enhancement of the Hall angle by Tb doping is helpful for practical applications of the Hall devices.
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Received: 30 July 2014
Revised: 07 September 2014
Accepted manuscript online:
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PACS:
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71.70.Ej
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(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
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73.50.Jt
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(Galvanomagnetic and other magnetotransport effects)
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75.47.Np
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(Metals and alloys)
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75.50.Bb
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(Fe and its alloys)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11374227, 51331004, 51171129, and 51201114), the Shanghai Science and Technology Committee, China (Grant Nos. 0252nm004, 13XD1403700, and 13520722700), and the National Basic Research Program of China (Grant No. 2015CB921501). |
Corresponding Authors:
Ma Li
E-mail: 77shibihan@tongji.edu.cn
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Cite this article:
Zhu Jia-Peng (朱嘉鹏), Ma Li (马丽), Zhou Shi-Ming (周仕明), Miao Jun (苗君), Jiang Yong (姜勇) Tb doping induced enhancement of anomalous Hall effect in NiFe films 2015 Chin. Phys. B 24 017101
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