Study on Anomalous Hall Effect and Spin-Orbit Torque Effect of TbCo-Based Multilayer Films
Menglu Yang1, Yuanjing Qu1, Tao He1
1Hubei Engineering Research Center of Weak Magnetic-field Detection, College of Science, China Three Gorges University, Yichang 443002, China.
Nanomaterials (Basel, Switzerland)
|May 10, 2024
Summary
Investigating TbCo-based multilayers revealed that buffer layers significantly influence anomalous Hall resistance loops. Temperature changes dramatically affect coercivity and magnetic anisotropy, crucial for spintronics applications.
Area of Science:
- Spintronics
- Condensed Matter Physics
- Materials Science
Background:
- TbCo-based multilayer films are key in spintronics research.
- Anomalous Hall effect and spin-orbit torque are critical properties.
- Anomalous Hall resistance loops provide insights into film characteristics.
Purpose of the Study:
- To investigate the impact of heavy metal buffer layers on TbCo-based multilayer properties.
- To analyze the temperature-dependent behavior of anomalous Hall resistance loops.
- To quantify spin-orbit torque efficiency and Dzyaloshinskii-Moriya interaction.
Main Methods:
- Fabrication of TbCo-based multilayer films with W/Pt buffer layers.
- Measurement of anomalous Hall resistance loops at various temperatures.
- Quantification of spin-orbit torque and Dzyaloshinskii-Moriya interaction via loop shift analysis.
Main Results:
- Coercivity significantly increases as temperature decreases.
- Films lacking perpendicular magnetic anisotropy at room temperature exhibit it at low temperatures.
- Spin-orbit torque efficiency and Dzyaloshinskii-Moriya interaction effective field were quantified for W/Pt/TbCo/Pt films.
Conclusions:
- Anomalous Hall resistance loops are vital for understanding basic film properties in spintronics.
- Loop shift analysis offers a method to extract advanced spintronic parameters.
- Buffer layer engineering and temperature control are crucial for tailoring TbCo-based multilayer spintronic performance.
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