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. 2016 Mar 8;9(3):179. doi: 10.3390/ma9030179

Figure 2.

Figure 2

(a) Relative density (▲) and mean grain size diameter (■) for (1−x)BaTiO3-(x)NaNbO3 powdered ceramics as a function of the NaNbO3 content; (b) Relative density of “pure” and Li or Cu doped as a function of the sintering temperature for the KNN ceramics.