Akmal, M.; A. Rashid, M. W.; Azlan, U.; Azmi, N. The Effects of Different Annealing Temperature and Number of Deposition Layers on the Crystallographic Properties of Potassium Sodium Niobate (KNN) Thin Films Synthesized by Sol-Gel Spin Coating Technique. JAMT 2017, 11, 91-102.