Self-growth of centimeter-scale single crystals by normal sintering process in modified potassium sodium niobate ceramics

Cheol-Woo Ahn; Ho-Yong Lee; Guifang Han; Shujun Zhang; Si-Young Choi; Jong-Jin Choi; Jong-Woo Kim; Woon-Ha Yoon; Joon-Hwan Choi; Dong-Soo Park; Byung-Dong Hahn; Jungho Ryu

doi:10.1038/srep17656

Self-growth of centimeter-scale single crystals by normal sintering process in modified potassium sodium niobate ceramics

Cheol-Woo Ahn, Ho-Yong Lee, Guifang Han, Shujun Zhang, Si-Young Choi, Jong-Jin Choi, Jong-Woo Kim, Woon-Ha Yoon, Joon-Hwan Choi, Dong-Soo Park, Byung-Dong Hahn, Jungho Ryu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

34 Citations (Scopus)

Abstract

In this manuscript, an interesting phenomenon is reported. That is the self-growth of single crystals in Pb-free piezoelectric ceramics. These crystals are several centimeters in size. They are grown without any seed addition through a normal sintering process in modified potassium sodium niobate ceramics. It has been achieved by the composition designed to compensate the Na + loss which occurs during the liquid phase sintering. The composition of the crystals is (K_0.4925 Na_0.4925-x Ba_0.015+x/2)Nb _0.995+x O₃ [x is determined by the Na⁺ loss, due to Na₂O volatilization]. These crystals have high piezoelectric voltage coefficients (g₃₃, 131 10^-3 Vm/N), indicating that they are good candidates for piezoelectric sensors and energy harvesting devices. We hope that this report can offer the opportunity for many researchers to have an interest in these crystals.

Original language	English
Article number	17656
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep17656
Publication status	Published - 3 Dec 2015
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

This study was financially supported by Fundamental Research Program of the Korean Institute of Materials Science (KIMS).

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "Self-growth of centimeter-scale single crystals by normal sintering process in modified potassium sodium niobate ceramics",

abstract = "In this manuscript, an interesting phenomenon is reported. That is the self-growth of single crystals in Pb-free piezoelectric ceramics. These crystals are several centimeters in size. They are grown without any seed addition through a normal sintering process in modified potassium sodium niobate ceramics. It has been achieved by the composition designed to compensate the Na + loss which occurs during the liquid phase sintering. The composition of the crystals is (K0.4925 Na0.4925-x Ba0.015+x/2)Nb 0.995+x O3 [x is determined by the Na+ loss, due to Na2O volatilization]. These crystals have high piezoelectric voltage coefficients (g33, 131 10-3 Vm/N), indicating that they are good candidates for piezoelectric sensors and energy harvesting devices. We hope that this report can offer the opportunity for many researchers to have an interest in these crystals.",

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AU - Ahn, Cheol-Woo

AU - Lee, Ho-Yong

AU - Han, Guifang

AU - Zhang, Shujun

AU - Choi, Si-Young

AU - Choi, Jong-Jin

AU - Kim, Jong-Woo

AU - Yoon, Woon-Ha

AU - Choi, Joon-Hwan

AU - Park, Dong-Soo

AU - Hahn, Byung-Dong

AU - Ryu, Jungho

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PY - 2015/12/3

Y1 - 2015/12/3

N2 - In this manuscript, an interesting phenomenon is reported. That is the self-growth of single crystals in Pb-free piezoelectric ceramics. These crystals are several centimeters in size. They are grown without any seed addition through a normal sintering process in modified potassium sodium niobate ceramics. It has been achieved by the composition designed to compensate the Na + loss which occurs during the liquid phase sintering. The composition of the crystals is (K0.4925 Na0.4925-x Ba0.015+x/2)Nb 0.995+x O3 [x is determined by the Na+ loss, due to Na2O volatilization]. These crystals have high piezoelectric voltage coefficients (g33, 131 10-3 Vm/N), indicating that they are good candidates for piezoelectric sensors and energy harvesting devices. We hope that this report can offer the opportunity for many researchers to have an interest in these crystals.

AB - In this manuscript, an interesting phenomenon is reported. That is the self-growth of single crystals in Pb-free piezoelectric ceramics. These crystals are several centimeters in size. They are grown without any seed addition through a normal sintering process in modified potassium sodium niobate ceramics. It has been achieved by the composition designed to compensate the Na + loss which occurs during the liquid phase sintering. The composition of the crystals is (K0.4925 Na0.4925-x Ba0.015+x/2)Nb 0.995+x O3 [x is determined by the Na+ loss, due to Na2O volatilization]. These crystals have high piezoelectric voltage coefficients (g33, 131 10-3 Vm/N), indicating that they are good candidates for piezoelectric sensors and energy harvesting devices. We hope that this report can offer the opportunity for many researchers to have an interest in these crystals.

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Self-growth of centimeter-scale single crystals by normal sintering process in modified potassium sodium niobate ceramics

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