Effect of elemental diffusion on temperature coefficient of piezoelectric properties in KNN-based lead-free composites

Cheol Woo Ahn, Chee Sung Park, Robert Dittmer, Soon Hyung Hong, Shashank Priya

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A study was conducted to investigate the effect of elemental diffusion on temperature coefficient of piezoelectric properties in KNN-based lead-free composites. KNN and KNLNS-BT powders were calcined at 950 °C for 3 hours and KNN was sintered at 1100 °C for 2 hours to conduct the investigations. Sintered KNN was crushed using mortar and pestle and its particle size was controlled to be in the range of 25-150 μm by sieving. Crushed KNN powders and ball-milled KNLNS-BT powders were mixed in the weight ratio of 0.5/0.5. The two type I and type II structures were pressed into disks under pressure of 100 kgf/cm2 and sintered at 1060 °C for 2 hours. The samples were poled in silicone oil at 120 °C by applying DC field of 4 kV/mm for 60 minutes and all electrical measurements were done on aged samples.

Original languageEnglish (US)
Pages (from-to)3961-3965
Number of pages5
JournalJournal of Materials Science
Volume45
Issue number14
DOIs
StatePublished - Jul 2010
Externally publishedYes

Bibliographical note

Funding Information:
Acknowledgements The authors gratefully acknowledge financial support from Office of Basic Energy Sciences, Department of Energy. The authors would also like to thank NCFL, VT for their help in characterization.

Fingerprint

Dive into the research topics of 'Effect of elemental diffusion on temperature coefficient of piezoelectric properties in KNN-based lead-free composites'. Together they form a unique fingerprint.

Cite this