Piezoelectric enhancements in K0.5Na0.5NbO3-based ceramics via structural evolutions

Izzuddin, Izura; Jumal, Mohammad Hafizuddin Hj.; Zainuddin, Zamzami; Janil, Nor Huwaida

doi:10.1016/j.ceramint.2019.05.275

Cited by 16 publications

(1 citation statement)

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“…Even though lead (Pb) is dangerous to human health and the environment, the majority of piezoelectric devices, such as transducers and actuators, employ Pb-based piezoelectric ceramics as one of its primary components [4]. The search for lead-free goods was sparked by this problem.…”

Section: Introductionmentioning

confidence: 99%

Influence of Double Calcination-Milling Route on the Structural and Microstructural Properties of Lead-Free K0.5NA0.5NBO3 (Knn) Ceramics

et al. 2023

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Potassium sodium niobate (KNN) has always been one of the most potential candidates to replace lead-based piezoelectric ceramics due to its strong piezoelectric properties and environmentally friendly composition. A strong piezoelectric property is constantly influenced by the sample's densification as well as its microstructural characteristics. One of the current main issues with this KNN lead-free piezoelectric material is the difficulty in creating high-density samples by conventional preparation and sintering. Thus, KNN lead-free ceramics were synthesised using an improved solid-state method by introducing the double calcination-milling route to this process. The outcome demonstrates that, despite the presence of additional KNN secondary phases, the double calcination-milling approach contributed to the early creation of the KNN phase. When sintered pellets are subjected to a double calcination milling process, the XRD pattern revealed that the main peaks of the sample are indexed to orthorhombic K0.5Na0.5NbO3. The double calcination KNN pellet have a relative density of 90% densification which is slightly higher than that of single calcination KNN pellet which shows 88% densification.

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Section: Introductionmentioning

confidence: 99%