1. Inner Mongolia Key Laboratory of Ferroelectric‐related New Energy Materials and Devices School of Materials and Metallurgy Inner Mongolia University of Science and Technology Baotou 014010 China
2. College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
3. Key Laboratory of Integrated Exploitation of Bayan Obo Multi‐Metal Resources Inner Mongolia University of Science and Technology Baotou 014010 China