fig1

Figure 1. (A) Temperature-dependent dielectric permittivity for (1-x)NN-xCZ ceramics. (B) Frequency-dependent dielectric permittivity and (C) diffuseness degree (γ) fitted from the modified Curie-Weiss law for x = 0.1 and 0.12. (D) SEM surface morphology and grain size distribution of 0.85NN-0.15CZ ceramic.