23 Mar 2024
Job Information
- Organisation/Company
CNRS- Department
Groupe de physique des matériaux- Research Field
Physics » Condensed matter properties
Physics » Solid state physics
Physics » Surface physics- Researcher Profile
First Stage Researcher (R1)- Country
France- Application Deadline
12 Apr 2024 - 23:59 (UTC)- Type of Contract
Temporary- Job Status
Full-time- Hours Per Week
35- Offer Starting Date
1 Jun 2024- Is the job funded through the EU Research Framework Programme?
Not funded by an EU programme- Is the Job related to staff position within a Research Infrastructure?
No
Offer Description
The project Carnot AimSCoRe aims to develop a recycling process for Sm-Co permanent magnets allowing the reuse of the recovered material for the production of new magnets. This involves obtaining a complete recycling process, starting from magnets to be recycled, of the 1:5 or 2:17 type, and aiming to obtain sintered magnets, with shapes and dimensions adaptable for applications.
Preliminary work carried out in the laboratory has highlighted particularities of the behavior of Sm-Co magnets during the application of a hydrothermal treatment. In particular, it has been shown that the treatment leads to the dissociation of the magnet into a magnetic fraction and a non-magnetic fraction, which are easily separable. Furthermore, these results reveal possible hydration of the Sm-Co magnetic phase during the treatment.
The recruited researcher will be responsible for optimizing the hydrothermal treatment conditions with the aim of obtaining very little degraded powders for sintering. For this, the behavior of the Sm-Co magnets during the process must be analyzed and characterized accurately, in relation with the magnetic properties of the powders obtained. The search for optimal treatment conditions will require the precise characterization of the structural and magnetic properties of the powders, in order to identify and therefore control the reactions which occur for the different constituent phases of this type of magnet.
The powders obtained will be compacted by sintering at the CRISMAT laboratory at ENSICAEN. The recruited researcher will be responsible for determining the optimal sintering conditions which will make it possible to obtain materials sufficiently dense to obtain magnets.
- Pulverization of Sm-Co magnets by hydrothermal or solvothermal treatment in a crystallization bomb.
- Study of the influence of pre-grinding the magnets on the efficiency of the process.
- Systematic characterization by X-ray diffraction of the powders obtained.
- Characterization by SQUID magnetometry and scanning electron microscopy of selected powders.
- Optimization of treatment parameters (time and temperature) in order to obtain powders suitable for sintering.
- Carrying out sintering tests, and optimizing sintering parameters (temperature and pressure)
- Characterization by X-ray diffraction and SQUID magnetometry of sintered materials.
The GPM (Groupe de Physique des Matériaux, UMR CNRS 6634) is structured into 5 departments: Metallurgy, Microstructure Mechanics, Scientific Instrumentation, Functional Materials and Nanostructures, Disordered Systems and Polymers, and Thematic openings and innovations. It brings together 150 staff including 60 Professors, Associate professors and Researchers, 30 technical staff and 60 PhD / PostDoct / Trainees. The laboratory is located on the Sciences and Engineering Rouen Normandie Campus (in Rouen), within the University of Rouen Normandie and INSA Rouen Normandie (7000m2).
The recruited researcher will work into the Functional Materials and Nanostructures department, within the Functional Materials and Magnetism team, made up of 11 teachers and researchers and 2 PhD students. The study of the relationships between structure (microstructure, nanostructure, local atomic structure) and magnetism of materials constitutes the framework of the research carried out within the team. These activities are devoted to the study of applied magnetic materials.
Requirements
- Research Field
- Physics
- Education Level
- PhD or equivalent
- Research Field
- Physics
- Education Level
- PhD or equivalent
- Research Field
- Physics
- Education Level
- PhD or equivalent
- Languages
- FRENCH
- Level
- Basic
- Research Field
- Physics » Condensed matter properties
- Years of Research Experience
- None
- Research Field
- Physics » Solid state physics
- Years of Research Experience
- None
- Research Field
- Physics » Surface physics
- Years of Research Experience
- None
Additional Information
Eligibility criteria
Expected technical skills:
- expertise in X-ray diffraction analysis
- expertise in SQUID magnetometry
- experience in sample preparation by hydro/solvothermal method.
Knowledge to implement:
- magnetism
- structure of materials for permanent magnets.
- magnetic properties of materials for permanent magnets.
Know-how and interpersonal skills:
- know how to carry out experiments and analyzes independently
- be able to discuss results as a team
- know how to write reports and scientific articles
- know how to present the results orally, in French and English.
- Website for additional job details
https://emploi.cnrs.fr/Offres/CDD/UMR6634-CHRVUR-048/Default.aspx
Work Location(s)
- Number of offers available
- 1
- Company/Institute
- Groupe de physique des matériaux
- Country
- France
- City
- ST ETIENNE DU ROUVRAY
- Geofield
Where to apply
- Website
https://emploi.cnrs.fr/Candidat/Offre/UMR6634-CHRVUR-048/Candidater.aspx
Contact
- City
ST ETIENNE DU ROUVRAY- Website
http://gpm.labos.univ-rouen.fr/
STATUS: EXPIRED