1. Department of Materials Science and Engineering, College of EngineeringPeking University Beijing 100871 China
2. Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKL‐MMD)Beijing Innovation Center for Engineering Science and Advanced Technology (BIC‐ESAT) Beijing 100871 China
3. Shenyang National Laboratory for Materials Science, Institute of Metal ResearchChinese Academy of Sciences Shenyang 110016 China
4. Electron Microscopy Laboratory and International Center for Quantum Materials, School of PhysicsPeking University Beijing 100871 China
5. Collaborative Innovation Center of Quantum Matter Beijing 100871 China