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 1

Guinier-Hägg X-ray diffraction patterns of solid-state reacted KNN, showing only the expected perovskite-related peaks. The subscript “pc” indicates pseudocubic indexing.