DataVXAPL MaterialsPaper
journal article·2015-02Open access

ε-iron nitrides: Intrinsic anomalous Hall ferromagnets

Guo-Ke Li, Yan Liu, De-Wei Zhao, Ping Song, Li Ma, Cong-Mian Zhen, Hui Liu, Deng-Lu Hou

APL Materials· Volume 3· Issue 2
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Source abstract

Abstract

The anomalous Hall effect in ε-iron nitrides (ε-Fe3-xN, 0 ≤ x ≤ 1) has been systematically investigated taking advantage of the fact that the exchange splitting of ε-Fe3-xN can be continuously tuned through the nitrogen concentration. It has been found that the anomalous Hall conductivity, σxyAH, is proportional to the saturation magnetization MS, i.e., σxyAH=SHMS, across significant variations in the saturation magnetization (96–1146 emu/cc). This relationship is in excellent agreement with the intrinsic mechanism as well as with the unified theory of AHE. Our results also demonstrate that the anomalous Hall conductivity is sensitive to the exchange splitting of the band structure.
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Research context

OpenAlex topics: Magnetic properties of thin films · Ferroelectric and Negative Capacitance Devices · Quantum and electron transport phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, Hebei Advanced Thin Films Laboratory, Hebei Normal University, Shijiazhuang 050024, People’s Republic of China

Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, People’s Republic of China

Department of Electronics and Key Laboratory of Photo-Electronic Thin Film Devices and Technology of Tianjin, Nankai University, Tianjin 300071, People’s Republic of China

Funding

2012 Hebei province post-doctoral research project selection of funding · National Natural Science Foundation of China (NSFC) · Natural Science Foundation of Hebei Province (Hebei Provincial Natural Science Foundation)

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