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Lethiecq, Marc
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Publications (18/18 displayed)
- 2024Porous metal backing for high-temperature ultrasonic transducers
- 2022Enhancement of Guided Wave Detection and Measurement in Buried Layers of Multilayered Structures Using a New Design of V(z) Acoustic Transducerscitations
- 2021Modeling and Experimental Characterization of Bonding Delaminations in Single-Element Ultrasonic Transducercitations
- 2021Accurate coupled vibration analysis of a piezoelectric ceramic cylinder by the superposition methodcitations
- 2017Porous lead zirconate titanate ceramics with optimized acoustic properties for high-frequency ultrasonic transducer applicationscitations
- 2017High-frequency acoustic characterization of porous lead zirconate titanate for backing applications
- 2014Fabrication and characterization of annular-array, high-frequency, ultrasonic transducers based on PZT thick filmcitations
- 2014Lead Zirconate Titanate-Based Thick Films for High-Frequency Focused Ultrasound Transducers Prepared by Electrophoretic Depositioncitations
- 2013Optimised Properties of High Frequency Transducers Based on Curved Piezoelectric Thick Films Obtained by Pad Printing Processcitations
- 2013Equivalent circuit model of a nanogenerator based on a piezoelectric nanowire–polymer compositecitations
- 2013Cu-Doping Effect on Dielectric Properties of Organic Gel Synthesized Ba4YMn3-xCuxO11.5±δcitations
- 2012Electrical Excitation and Mechanical Vibration of a Piezoelectric Cube
- 2012Electrical Excitation and Mechanical Vibration of a Piezoelectric Cube
- 2012Electrophoretic deposition (EPD) process for lead zirconate titanate (PZT) thick films fabrication and high frequency medical imaging
- 2012Lead-Zirconate-Titanate Thick Films by Electrophoretic Deposition for High-Frequency Ultrasound Transducerscitations
- 2012Dielectric Properties of Hexagonal Perovskite Ceramics Prepared by Different Routescitations
- 2012Non-Planar Pad-Printed Thick-Film Focused High-Frequency Ultrasonic Transducers for Imaging and Therapeutic Applicationscitations
- 2008Electromechanical Properties of Piezoelectric Integrated Structures on Porous Substratescitations
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article
Cu-Doping Effect on Dielectric Properties of Organic Gel Synthesized Ba4YMn3-xCuxO11.5±δ
Abstract
International audience ; Copper doped-Ba4YMn3ÀxCuxO11.5 7 δ samples were synthesized by an organic gel assisted citrate process. X-ray diffraction of compositions with x .002, 0.005, 0.01, 0.02 and 0.04 does not reveal any change of hexagonal perovskite structure on doping. The effects of Cu-doping on the microstructure and dielectric properties were investigated. Cu doping modifies the electrical properties at the level of the impedance characteristics of both grain and grain boundary and to understand these different behaviours, we have carried out high-resolution transmission electron microscopy analysis.