13. G. Wang, H. F. Liu, H. Wu, X. N, Li, H. Qiu, Y. Yang, B. J. Qu, T. L. Ren, X. F. Han, R. Y. Zhang, and H. Wang, Epitaxial yttrium iron garnet film for fabrication of high frequency on-chip inductors, Appl. Phys. Lett. 109, 162405 (2016)