1. College of Materials Science and Engineering Sichuan University Chengdu 610065 China
2. Key Laboratory of Advanced Special Materials and Technology Ministry of Education Chengdu 610065 China
3. State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China
4. Center for Microwave Magnetic Materials and Integrated Circuits (CM3IC) Department of Electrical and Computer Engineering Northeastern University Boston MA 02115 USA