Electrical and dielectric properties of Na1/2La1/2Cu3Ti4O12 ceramics prepared by high energy ball-milling and conventional sintering
Mahfoz Kotb H1, 2, †, , Ahmad Mohamad M1, 3, ‡,
       

(a) EDX spectrum of the grain boundary for NLCTO-50 and (b) the EDX mapping of Cu from the surface of the NLCTO-75.