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

Journal Article


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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.

Authors


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

Publication Date


  • 2015

Citation


  • Ahn, C., Lee, H., Han, G., Zhang, S., Choi, S., Choi, J., Kim, J., Yoon, W., Choi, J., Park, D., Hahn, B. & Ryu, J. (2015). Self-growth of centimeter-scale single crystals by normal sintering process in modified potassium sodium niobate ceramics. Scientific Reports, 5 17656-1-17656-8.

Scopus Eid


  • 2-s2.0-84949267270

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2769&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1767

Has Global Citation Frequency


Start Page


  • 17656-1

End Page


  • 17656-8

Volume


  • 5

Place Of Publication


  • United Kingdom

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.

Authors


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

Publication Date


  • 2015

Citation


  • Ahn, C., Lee, H., Han, G., Zhang, S., Choi, S., Choi, J., Kim, J., Yoon, W., Choi, J., Park, D., Hahn, B. & Ryu, J. (2015). Self-growth of centimeter-scale single crystals by normal sintering process in modified potassium sodium niobate ceramics. Scientific Reports, 5 17656-1-17656-8.

Scopus Eid


  • 2-s2.0-84949267270

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2769&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1767

Has Global Citation Frequency


Start Page


  • 17656-1

End Page


  • 17656-8

Volume


  • 5

Place Of Publication


  • United Kingdom