This thesis is fully in line with the objectives of the Réseau Technologique sur les Capteurs en Environnement (RTCE), which aims to promote the development of advanced sensors for environmental monitoring. By aligning its work with RTCE priorities, this project will contribute to:
- Develop sustainable and innovative technologies for the detection and management of environmental impacts.
- Improve the ability to monitor natural systems and human infrastructures, while minimizing their ecological footprint.
- Strengthen interdisciplinary collaborations and synergies between fundamental research and technological innovation.
Interdisciplinary collaboration between CNRS units
This project mobilizes a unique consortium of four CNRS laboratories, each contributing complementary expertise. This interdisciplinary collaboration, rooted in the fields of engineering, physics and chemistry, reflects the transversality and scientific richness of the project:
1. GeePs (Group of Electrical Engineering - Paris)
o CNRS Ingénierie affiliation
o Expertise: Multiphysics numerical modeling, experimental characterization of magnetoelectric properties, and design of functional prototypes.
o Partners: Hakeim Talleb (Pr), Aurélie Gensbittel (MCF).
2. SATIE (Information and Energy Technology Systems and Applications)
o CNRS Ingénierie affiliation
o Expertise: Development and integration of magnetoelectric current sensors coupled to intelligent electronic systems.
o Partners: Vincent Loyau (MCF-HDR), Frédérique Mazaleyrat (Pr).
3. INSP (Institut des NanoSciences de Paris)
o CNRS Physics affiliation
o Expertise: Cleanroom synthesis of oxide-based ME composites and study of nanoscale phenomena.
o Partners: Massimiliano Marongolo (Pr), Pauline Rovillain (MCF-HDR).
4. ITODYS (Interfaces, Treatments, Organization and Systems Dynamics)
o CNRS Chemistry affiliation
o Expertise: Development of polymer-oxide hybrid materials and functionalization of nanoparticles for multifunctional devices.
o Partners: Fayna Mammeri (MCF-HHDR), Souad Merah (Pr), Nabil Challab (MCF).
The position will be located at the GeePs Paris site: Campus de Jussieu, Aile 65-66, 1er et 2ème étages, 4 place Jussieu 75252 PARIS.
Skills required
- Modeling and numerical simulation (electromagnetism, multiphysics couplings).
- Practical experience in acoustics, electronics and measurement techniques.
- Solid knowledge of functional materials and applied physics.
- Proficiency in programming languages (C, C++, Matlab, Python).
- Ability to work in an interdisciplinary environment.

Magnetoelectric (ME) composites, which combine the properties of magnetostrictive and ferroelectric materials, represent an emerging class of multifunctional materials. They are capable of converting a magnetic signal into an electrical signal (and vice versa) thanks to a direct or indirect coupling between the magnetic and ferroelectric domains. This unique property opens the way to a wide range of applications, notably in the design of innovative high-sensitivity sensors.
This thesis project focuses on the development of next-generation magnetoelectric sensors, particularly suited to environmental monitoring and energy efficiency applications. These devices will aim for optimum performance while incorporating sustainable manufacturing strategies to reduce their ecological impact. The project's originality lies in a dual approach:
1. The synthesis and optimization of all-inorganic composites, based on stacks of ferrimagnetic and ferroelectric oxide layers.
2. The development of flexible hybrid materials incorporating magnetoelastic nanoparticles in piezoelectric polymer matrices.
These devices will meet the requirements of high sensitivity, low power consumption and durability, while being suitable for applications such as environmental monitoring, energy infrastructures and energy recovery systems.