Organisation/Company: CNRS
Department: Groupe de physique des matériaux
Research Field: Physics » Condensed matter properties, Physics » Solid state physics, Physics » Surface physics
Researcher Profile: Recognised Researcher (R2)
Country: France
Application Deadline: 25 Nov 2024 - 23:59 (UTC)
Type of Contract: Temporary
Job Status: Full-time
Hours Per Week: 35
Offer Starting Date: 15 Jan 2025
Is the job funded through the EU Research Framework Programme? Not funded by a EU programme
Is the Job related to staff position within a Research Infrastructure? No
Offer Description The project FAIRE PLUS (Labex EMC3) aims to develop a process for recycling Nd-Fe-B permanent magnets, allowing the reuse of the recovered material for the production of new magnets. This involves extending a recycling process developed on a laboratory scale to obtain sintered magnets, with adaptable shapes and dimensions for various applications. This process includes two stages: solvothermal pulverization and spark plasma sintering.
The preliminary work at the GPM (Rouen) and CRISMAT (Caen) laboratories has defined the optimal conditions for pulverizing and sintering Nd-Fe-B magnets from WEEE (Waste Electrical and Electronic Equipment). The optimal pulverization conditions were defined for small quantities of material, while sintering conditions were defined for mixtures resulting from multiple pulverizing operations.
Objectives of the position include:
Verifying if optimal pulverization conditions for small quantities can be applied to larger quantities (hundreds of grams), possibly consisting of a mixture of magnets from different sources.
Verifying if sintering conditions optimal for small quantities can be applied to larger quantities of powders, possibly consisting of a mixture of powdered magnets from different sources.
By studying the possibility of obtaining sintered materials with homogeneous magnetic properties, and adapting recycling conditions as necessary, the work carried out will validate the whole recycling process.
The recruited researcher will be responsible for:
Conducting solvothermal pulverization tests at the GPM laboratory (Rouen).
Conducting sintering tests at the CRISMAT laboratory (Caen).
Characterizing materials before and after sintering by X-ray diffraction, Mössbauer spectrometry, scanning electron microscopy, and SQUID magnetometry.
Expected technical skills include:
Expertise in X-ray diffraction analysis
Expertise in Mössbauer spectrometry analysis
Expertise in SQUID magnetometry
Experience in sample preparation by solvothermal pulverization
Knowledge to implement:
Magnetism
Structure of materials for permanent magnets
Magnetic properties of materials for permanent magnets
Know-how and interpersonal skills:
Ability to carry out experiments and analyses independently
Ability to discuss results as a team
Ability to write reports and scientific articles
Ability to present results orally in French and English
Additional comments: Duration of the contract is 10 to 12 months depending on administrative rules (effective hiring date).
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