Ferroic Materials for Transducers

The Ferroic Materials for Transducers (FMT) group studies and develops functional oxides, with a special interest on ABO3 perovskite structures, which exhibit outstanding coupling properties. New intriguing physical effects are periodically discovered on this material family. Understanding these effects and using them in functional devices remains an internationally highly-competitive area and a great source of innovation. The main interest of ABO3 perovskite structures is that their properties can be tuned and thus optimized to generate various devices with great performance and diverse functionalities, such as sensors and actuators.

The overall objective of our group is to acquire a broad knowledge of coupling phenomena in ferroic materials, with an aim of discovering new general concepts, clearing the way for both understanding and applications.

 

MAIN EXPERTISE FIELDS

As depicted in the figure, our group has four areas of interest and two transversal activities.

Applicative areas of interest

  • Design of ferroic materials (ab initio, phase transitions)
  • Advanced characterization of oxides (Raman, XRD, piezo/ferro)
  • Sol gel deposition, inkjet printing and Atomic Layer Deposition
  • Fatigue of piezoelectrics

Transversal activities

  • Modelling of functional oxides (first and second principles)
  • Chemical Solution Deposition and micro-fabrication

MAIN ASSETS

Chemical platform to prepare sol gel functional oxides

  • Inkjet printing
  • Laser lithography
  • Two labs dedicated to optical and dielectric characterizations

Technology

  • Inkjet printing of piezoelectric films
  • Printed sensors
  • Chemical Solution Deposition of piezoelectric films

Applications

  • Printed sensor on satellites
  • Electrocaloric coolers
  • Haptic function on glass

 

 EQUIPMENT

SELECTED PUBLICATIONS

2020

2019

2018

 

 

Research domains
  • Materials

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 Emmanuel DEFAY
Emmanuel DEFAY
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