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Figure 4 | Nanoscale Research Letters

Figure 4

From: Nanoscale potassium niobate crystal structure and phase transition

Figure 4

XRD patterns showing phase transition of nanoscale KNO 3 powders. Obtained upon heat-treating gels at different temperatures: (a) orthorhombic to tetragonal (600°C), (b) tetragonal to cubic (600°C), (c) orthorhombic to tetragonal (700°C), (d) tetragonal to cubic (700°C), (e) orthorhombic to tetragonal (800°C), and (f) tetragonal to cubic (800°C).

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