Complex anomalous Hall effect in ferrimagnetic CoxGd100−x (39 ≤ x ≤ 73) alloys
Source abstract
Abstract
Rare-earth and transition-metal (RE-TM) alloys have been studied extensively due to their unique optical and magneto-transport properties for advanced magnetic memory devices. Recent studies reveal an extra hump in the anomalous Hall effect in ferrimagnetic CoxGd100−x alloys with x ≈ 78, yet its origin is still ambiguous. In this article, the magnetic properties and Hall effect have been studied in CoxGd100−x alloys with varying Co concentrations in the range of 39 ≤ x ≤ 73. Complex anomalous Hall effect, including temperature-dependent polarity reversal and the appearance of an extra hump, has been found in a certain range of Co concentration. These characteristics were explained by the combined effect of magnetic domain evolution and spin-flop behavior. These results are helpful for understanding the complex transport properties in the RE-TM ferrimagnetic alloys.
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Research context
OpenAlex topics: Magnetic properties of thin films · Magnetic Properties and Applications · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Science and Technology of China 1 , Hefei 230026, China
Ganjiang Innovation Academy, Chinese Academy of Sciences 2 , Ganzhou 341000, China
CAS Key Laboratory of Magnetic Materials and Devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences 3 , Ningbo 315201, China
University of Chinese Academy of Sciences 4 , Beijing 100049, China
Funding
National Natural Science Foundation of China · K. C. Wong Education Foundation · Ningbo Key Scientific and Technological Project
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