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Title: Self-Growth of Centimeter-Scale Single Crystals by Normal Sintering Process in Modified Potassium Sodium Niobate Ceramics
Authors: Ahn, Cheol-Woo
Lee, Ho-Yong
Han, Guifang
Zhang, Shujun
Choi, Si-Young
Choi, Jong-Jin
Kim, Jong-Woo
Yoon, Woon-Ha
Choi, Joon-Hwan
Park, Dong-Soo
Hahn, Byung-Dong
Ryu, Jungho
Keywords: Ferroelectrics and multiferroics
Sensors and biosensors
Issue Date: 2015
Source: Ahn, C.-W., Lee, H.-Y., Han, G., Zhang, S., Choi, S.-Y., Choi, J.-J., et al. (2015). Self-Growth of Centimeter-Scale Single Crystals by Normal Sintering Process in Modified Potassium Sodium Niobate Ceramics. Scientific Reports, 5, 17656-.
Series/Report no.: Scientific Reports
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 (K0.4925Na0.4925−xBa0.015+x/2)Nb0.995+xO3 [x is determined by the Na+ loss, due to Na2O volatilization]. These crystals have high piezoelectric voltage coefficients (g33, 131 10−3Vm/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.
ISSN: 2045-2322
DOI: 10.1038/srep17656
Schools: School of Mechanical and Aerospace Engineering 
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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