**Author details**

Ahmed Mourtada Elseman1 , Sajid2 , Dong Wei2 , Ahmed Esmail Shalan1 , Mohamed Mohamed Rashad1 and Meicheng Li2 \*

\*Address all correspondence to: mcli@ncepu.edu.cn

1 Electronic and Magnetic Materials Department, Advanced Materials Division, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Cairo, Egypt

2 State Key Laboratory of Alternate Electrical Power, System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing, China
