Steplike anomalous Hall behaviors in mixed-phase BiFeO3-based heterostructure

Liu，Pengfei1,2; Liu，Qi3; Xu，Zedong4; Wu，Shizhe4; Wang，Kaiyou1,2,5

2022-09-12

10.1063/5.0119457

APPLIED PHYSICS LETTERS   Impact Factor & Quartile

0003-6951

1077-3118

The heterostructures based on multiferroic BiFeO3 (BFO) have received much attention for the great potential in magnetoelectric coupling and spintronic applications. Therefore, the BFO films combined with rhombohedral (R) phase and tetragonal (T) phase can bring in various functionalities. Here, we demonstrate that the Ta/Pt/Co/Pt multilayers grown on R-, T-, and mixed-phase BFO exhibit perpendicular magnetic anisotropy. We find that the magnetic switching behavior of the multilayer is sensitive to the phase of the BFO layer. The Ta/Pt/Co/Pt layers grown on top of the pure R-or T-phase BFO show one-step anomalous Hall effect (AHE) switching. However, the layers grown on the mixed-phase BFO show steplike AHE switching. We attribute that the steplike switching behavior originates from the two different interfacial situations between mixed-phase BFO and above layers. Our results bring a potential avenue for realizing spintronic devices based on mixed-phased BFO.

SCI

English

NI Journal Papers

Others

Beijing Natural Science Foundation["Z190007","2212048"] ; National Natural Science Foundation of China["11474272","61774144"] ; Chinese Academy of Sciences["QYZDY-SSW-JSC020","XDB28000000","XDPB44000000"]

Physics

Physics, Applied

WOS:000882203600013

AIP Publishing

PHYSICS

2-s2.0-85138751033

Scopus

1.Beijing Academy of Quantum Information Sciences,Beijing,100193,China
2.State Key Laboratory for Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences,Beijing,100083,China
3.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
4.School of Electronics and Information Engineering,Tiangong University,Tianjin,300387,China
5.Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,100049,China

Liu，Pengfei,Liu，Qi,Xu，Zedong,et al. Steplike anomalous Hall behaviors in mixed-phase BiFeO3-based heterostructure[J]. APPLIED PHYSICS LETTERS,2022,121(11).

Liu，Pengfei,Liu，Qi,Xu，Zedong,Wu，Shizhe,&Wang，Kaiyou.(2022).Steplike anomalous Hall behaviors in mixed-phase BiFeO3-based heterostructure.APPLIED PHYSICS LETTERS,121(11).

Liu，Pengfei,et al."Steplike anomalous Hall behaviors in mixed-phase BiFeO3-based heterostructure".APPLIED PHYSICS LETTERS 121.11(2022).