Effect of Zn Site for Ca Substitution on Optical and Microwave Dielectric Properties of ZnAl₂O₄ Thin Films by Sol Gel Method

Figure 4

AFM images of Ca_𝑥Zn_(1−𝑥)Al₂O₄ thin films.

(a) 𝑥=0.00

(b) 𝑥=0.05

(c) 𝑥=0.10

(d) 𝑥=0.15

(e) 𝑥=0.20

(f) 𝑥=0.25

(g) 𝑥=0.30