Fabrication and Electrical Properties of Mn-Doped KNbO<sub>3</sub>Ceramics Synthesized from KHCO<sub>3</sub>as a Starting Material

Nagata, Hajime; Yawata, Nobutaka; Sato, Shigeki; Takenaka, Tadashi

doi:10.7567/jjap.51.09ld05

Cited by 2 publications

(1 citation statement)

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“…As we know, pure KNbO 3 is easily deliquesced due to the high water-absorbing issue. , In this work, we checked the water-absorbing property of KN: x ZnO ceramics, as shown in Figure . One can see from Figure a that pure KN ceramics were immediately deliquesced as soon as the sample was immersed into water.…”

Section: Resultsmentioning

confidence: 99%

Lead-Free KNbO₃:xZnO Composite Ceramics

et al. 2016

ACS Appl. Mater. Interfaces

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It is a tough issue to develop dense and water resistant KNbO ceramics due to high evaporation and hygroscopicity of KO. Here, KNbO:xZnO composite ceramics were used to successfully solve this problem, where ZnO particles were randomly distributed into a KNbO matrix. The addition of ZnO hardly affects the phase structure of KNbO, and moreover, the enhancement of electrical properties, thermal stability, and aging characteristics was observed in KNbO:xZnO composite ceramics. The composites possessed the maximum d of 120 ± 5 pC/N, which is superior to that of pure KNbO (d = 80 pC/N). More importantly, a strong water resistance and an aging-free characteristic were observed in KNbO:0.4ZnO. This is the first time for KNbO ceramics to simultaneously improve electrical properties and resolve the water-absorbing properties. We believe that these composite ceramics are promising for practical applications.

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Section: Resultsmentioning

confidence: 99%