学術雑誌論文

学術雑誌論文

text

AIP Advances. 2022, 12(3), p. 035216

Magnetic-field and temperature dependence of anomalous Hall effect in Pt/Cr₂O₃/Pt trilayer

American Institute of Physics

英語

text

2022-03-09

https://doi.org/10.1063/9.0000253

Xinrui Wang, Kentaro Toyoki, Ryoichi Nakatani, and Yu Shiratsuchi, AIP Advances 12, 035216 (2022); https://doi.org/10.1063/9.0000253.

The Pt/Cr₂O₃ interface exhibits a variety of spin-related phenomena. In this study, we investigated the anomalous Hall effect (AHE) of a Pt/40-nm-thick Cr₂O₃/Pt trilayer grown on Al₂O₃(0001), where Cr₂O₃ is an antiferromagnetic (AFM) insulator. All layers were grown epitaxially on the substrate, and X-ray reflectivity measurement showed an interfacial roughness of approximately 0.2 nm at each interface. The AHE resistance showed a nonlinear magnetic-field dependence at 300 K. Below 250 K, a clear hysteresis with coercivity was observed. The coercivity was approximately 7 T above 150 K and approximately 6 T below 100 K. The remanent AHE resistance shows a finite value below 285 K. The temperature dependence forms a broad peak with a maximum at approximately 200 K and gradually decreases with decreasing temperature. This temperature dependence is similar to that reported for the interfacial magnetic moment on Cr₂O₃(0001). Based on these results, the remanent AHE coupled with the AFM order parameter or the Néel vector was successfully detected in the 40-nm-thick Cr₂O₃ layer grown on the conductive layer.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Xinrui Wang, Kentaro Toyoki, Ryoichi Nakatani, and Yu Shiratsuchi, AIP Advances 12, 035216 (2022) and may be found at https://doi.org/10.1063/9.0000253.

89955

Magnetic-field and temperature dependence of anomalous Hall effect in Pt/Cr₂O₃/Pt trilayer

American Institute of Physics

英語

2022-03-09

AIP Advances

12

3

035216

https://doi.org/10.1063/9.0000253

https://hdl.handle.net/11094/89955