1. Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKL‐MMD) School of Materials Science and Engineering Peking University Beijing 100871 China
2. Department of Ultrasound State Key Laboratory of Complex Severe and Rare Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China
3. Department of Radiology The Fifth Medical Center of Chinese PLA General Hospital Beijing 100039 China
4. Institute of Spin‐X Science and Technology South China University of Technology Guangzhou 510641 China
5. School of Materials Sun Yat‐sen University Shenzhen 518107 China