PhD thesis: Nanoengineering refractory compositionally complex alloys for extreme conditions (M/F)

Job Description

Missions

The PhD student will synthesize thin films of refractory compositionally complex alloys (RCCAs-TF) using physical vapor deposition, with precise control over composition and microstructure. He/She will perform structural, chemical, and mechanical characterization at multiple scales, including in situ micromechanical testing using scanning electron microscopy (SEM). Particular attention will be given to studying deformation mechanisms and their evolution under ion irradiation, simulating the extreme environments of fusion reactors. The work follows a multi-scale approach, combining the experimental facilities at LSPM, the University of Arizona, and the Lawrence Livermore National Laboratory. The goal is to understand the relationships between composition, microstructure, and irradiation tolerance, in order to design high-performance materials for extreme conditions.

Activity

The PhD student will be responsible for synthesizing thin films of refractory compositionally complex alloys using magnetron sputtering and pulsed laser deposition. He/She will perform structural and chemical characterization using advanced techniques (SEM, TEM, TOF-SIMS). He/She will conduct in situ micromechanical testing in a scanning electron microscope (SEM) to evaluate the mechanical properties at small scales. The student will participate in ion irradiation campaigns in collaboration with international partners and analyze the effects of irradiation on material properties. He/She will process and interpret the data using a multi-scale approach, contribute to the writing of scientific articles, and present the results at international conferences.

Your Profil

Skills

The candidate must hold a master's degree in physics, materials science, or a related discipline, with a strong background in metallic materials. Knowledge of thin films, deposition techniques (PVD), and characterization methods (SEM, TEM) is highly desirable. Prior experience in micromechanics or small-scale characterization will be an asset. The candidate should demonstrate scientific rigor, autonomy, analytical skills, and the ability to work in a team within an international environment. A good command of English is essential, as well as the ability to be mobile between France and the United States.

Your Work Environment

The PhD student will work in an international research environment at the interface between the Laboratoire des Sciences des Procédés et des Matériaux (LSPM-CNRS, Université Sorbonne Paris Nord), under the supervision of Dr. Matteo Ghidelli, and the Materials Science and Engineering Department at the University of Arizona, under the supervision of Prof. Horst Hahn. The project is part of the joint CNRS–University of Arizona program, supported by the French-Arizona Institute for Global Grand Challenges. The student will have access to state-of-the-art experimental facilities and benefit from close collaboration with leading academic and national partners. This framework offers a strong interdisciplinary environment, combining materials science, physics, and mechanics, as well as opportunities for international mobility.

Compensation and benefits

Compensation

2300 €/month gross

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

The research professions