Gửi tin nhắn: The effect of nanosized CoFe 2 O 4 addition on the magnetic properties of
GdBa 2 Cu 3 O 7δ using AC magnetic susceptibility measurements
/R. AWAD a,b,* , N. H. MOHAMMED a , A. I. ABOU ALY a , S. ISBER c ,
H. A. MOTAWEH d , D. EL-SAID BAKEER d , M. ROUMIÉ e
