2021
DOI: 10.1111/ijac.13896
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Component fraction effect on microstructure and properties of CoFe2O4−K0.5Na0.5NbO3 composites

Abstract: CoFe2O4−K0.5Na0.5NbO3 (CFO−KNN) composites were sintered in air at 1100°C for 2 h. The relative density of sintered CFO−KNN varied with the KNN/CFO ratio and when the volume fraction of KNN reached 50% or more, the sintered composites had a relative density higher than both of the components (i.e., individually sintered KNN and CFO). The highest relative density (94%) was obtained with the composites of 80 vol% KNN. Transmission electron microscopy did not observe any secondary phase at the interface between C… Show more

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Cited by 2 publications
(2 citation statements)
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“…The difficulty in developing wide frequency bandwidth transducers lies in the low transmittance of sound waves caused by the impedance mismatch between the piezoelectric material and the electrical system. The area of the two‐dimensional array element is small, and the piezoelectric material with a large dielectric constant produces a lower impedance, which makes it easy to achieve acoustic impedance matching between the element and the detected medium 9,10 . For decades, Pb(Zr,Ti)O 3 (PZT) ceramics have occupied the main share of the market with their excellent piezoelectric properties and mature preparation technology 11 .…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…The difficulty in developing wide frequency bandwidth transducers lies in the low transmittance of sound waves caused by the impedance mismatch between the piezoelectric material and the electrical system. The area of the two‐dimensional array element is small, and the piezoelectric material with a large dielectric constant produces a lower impedance, which makes it easy to achieve acoustic impedance matching between the element and the detected medium 9,10 . For decades, Pb(Zr,Ti)O 3 (PZT) ceramics have occupied the main share of the market with their excellent piezoelectric properties and mature preparation technology 11 .…”
Section: Introductionmentioning
confidence: 99%
“…The area of the two-dimensional array element is small, and the piezoelectric material with a large dielectric constant produces a lower impedance, which makes it easy to achieve acoustic impedance matching between the element and the detected medium. 9,10 For decades, Pb(Zr,Ti)O 3 (PZT) ceramics have occupied the main share of the market with their excellent piezoelectric properties and mature preparation technology. 11 However, the component lead (Pb) contained in PZT is extremely harmful to the human body and the environment and does not conform to the concept of sustainable development.…”
Section: Introductionmentioning
confidence: 99%