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2. Lead-free piezoelectric materials, alternatives to PZT
Research into lead-free piezoelectric materials is driven by the need to find materials that are less harmful than PZT, but also to find piezoelectric materials that can be used in areas where PZT cannot, such as very high-temperature applications (> 350°C).
In 2004, a large piezoelectric coefficient d
33
= 416 pC · N
–1
, comparable to that of PZT was obtained by Saito et al.
, in textured potassium sodium niobate ceramics. Since then, intense research into lead-free piezoelectric ceramics has been carried out
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Lead-free piezoelectric materials, alternatives to PZT
Conclusion and outlook
Bibliography
Bibliography
Standards and norms
- Piezoelectric properties of ceramic materials and components – Part 1: Terms and definitions - NF EN 50324-1 - 12-02
- Piezoelectric properties of ceramic materials and components – Part 2: Measurement methods – Low power - NF EN 50324-2 - 12-02
- Piezoelectric properties of ceramic materials and components – Part 3: Measurement methods – High power - NF EN 50324-3 - 12-02
Directory
Non-exhaustive list of French academic and industrial laboratories working on the study and development of lead-free piezoelectric ceramics.
Ceramics Research Institute, Limoges https://www.ircer.fr/
GREMAN Laboratory, Tours https://greman.univ-tours.fr/
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