Structural Disorder in the Key Lead-Free Piezoelectric Materials, 𝐊_𝑥𝐍𝐚_1−𝑥𝐍𝐛𝐎_𝟑 and (1−𝑥)𝐍𝐚_𝟎.𝟓𝐁𝐢_𝟎.𝟓𝐓𝐢𝐎_𝟑+𝑥𝐁𝐚𝐓𝐢𝐎_𝟑

Figure 2

Electron diffraction patterns along a −3, 0, axis in KNN x with (a) and (b) .

(a)

(b)