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Published on 7 December 2023
Research FieldMaterials and applications


ThemeEngineering sciences


Materials and applications Engineering sciences DRT DCOS SCCS LCMA Grenoble
Development of lead free piezoelectric actuator
At CEA-Tech, the LETI Institute creates innovation and transfers it to industry. The micro-actuator component laboratory (LCMA) is working on the integration of piezoelectric materials into microsystems that allow electromechanical transduction. Lead zirconate titanate (PZT) is today the most powerful piezoelectric material for micro-actuator applications. However, the introduction in the near future of a new standard regarding the lead amount allowed in chips (European RoHS directive) leads us to evaluate alternative lead-free materials to PZT for piezoelectric actuator applications. The development of lead-free materials has thus become a major focus of piezoelectric research. This research led to revisit and modify some classical piezoelectric such as KNbO3 and BaTiO3. In particular, the KNaxNb1-xO3 (KNN) family has been identified as promising. The objective of the postdoc is therefore to evaluate some lead-free piezoelectric materials and to compare their properties with that of the reference material, PZT. Suitable test vehicles will be fabricated in LETI’s clean rooms for electrical and piezoelectric characterizations by mean of dedicated tools already available at lab. For this work the candidate will lean on a solid experience developed at LETI for more than 20 years on piezoelectric thin films.
Département Composants Silicium (LETI) Service Caractérisation, Conception et Simulation Labo Composants Micro-actuateurs
LE RHUN Gwenaël CEA DRT/DCOS/SCMS/LCMA 17 rue des Martyrs 38054 GRENOBLE Cedex 9 FRANCE 04 38 78 12 29
Start date1/2/2018

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