• Subject: "Nanostructure and crystallization mechanisms in Phase-Change Materials for Advanced Embedded Memory Applications"

    General aim:

    This work aims to study finely the optimized chalcogenides (typically GST) integrated in memory cells through original experiments to follow in situ the crystallization of thin films and the nanostructures of PCM in both amorphous and crystalline states.

    The evolution of stress and microstructure will be studied in thin films and then in patterned structures. In situ measurements of curvature and X-ray diffraction will thus be carried out in the laboratory and on a synchrotron beamline. And a reflection will be undertaken to carry out operando diffraction measurements on dedicated structures. It will be a matter of measuring, by time-resolved diffraction, the crystallization of a memory cell during cycling. This work will be performed in strong partnership with STMicroelectronics.

    Requirements:

    The ideal candidate holds a PhD degree in Material Sciences (or equivalent), has a solid background in physics, good communication skills and is proficient in written and spoken English. Knowledge of x-ray scattering (and possibly previous experience with synchrotron radiation)and programming skills will be highly appreciated.

    Resume:

    Starting year: 2020

    Laboratory: IM2NP (http://www.im2np.fr/)

    Industry: STMicroelectronics,Crolles/Rousset –France (http://www.st.com)

    Duration : 2 years (with 1 year possible extension).

    Location: IM2NP-Marseille

    Application:

    a CV, two letters of recommendation and a letter of motivation should be sent by email to Prof. Olivier THOMAS (olivier.thomas@im2np.fr) and Dr. Magali PUTERO (magali.putero@im2np.fr).

    Further information are available in the following document: « 2020_Postdoc_Nano2022_PCM.pdf »


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  • Profil d’enseignement :

    Enseignements de physique générale (niveau L) et/ou de physique des matériaux (niveau M) au sein du Département de Physique à l’Université de Poitiers, UFR Sciences Fondamentales et Appliquées (http://sfa.univ-poitiers.fr/physique/).

    Profil de recherche:

    La personne recrutée s’intégrera dans l’équipe «Physique et Propriétés des Nanostructures»au sein du Département de Physique et Mécanique des Matériaux (PMM) de l’Institut Pprime (https://www.pprime.fr).

    Elle viendra renforcer le potentiel de recherche de l’équipe qui couvre la croissance de nanoparticules et de films minces nanostructurés par voie physique (évaporation par faisceaux d’électrons, pulvérisation ionique, pulvérisation magnétron), leur caractérisation par des approches expérimentales in situ ou ex situ, ainsi que l’étude et la modélisation de leurs propriétés physiques, en particulier optiques et plasmoniques.

    Dans ce contexte, ils souhaitent recruter un enseignant-chercheur, physicien de la matière condensée avec une bonne expertise en nanosciences et nanomatériaux. Il/elle apportera ses compétences pour travailler sur des aspects fondamentaux et expérimentaux dans le domaine de la fonctionnalisation de surfaces par des nanostructures auto-organisées (nanoparticules, nanofils) ou du couplage électromagnétique entre ces nanostructures et leur environnement.

    Ses travaux devront contribuer à l’étude des mécanismes de formation de ces nanostructures en lien avec les propriétés physiques recherchées et leurs applications potentielles (par exemple: spectroscopie exaltée, plasmonique hybride, thermoplasmonique, etc.).

    Des connaissances solides en croissance de films minces par voie physique seront appréciées, sans pour autant être un prérequis indispensable au recrutement.

    Contact:

    Prof. S. Dubois (directeur du Département PMM, Institut Pprime): sylvain.dubois@univ-poitiers.fr

    Prof. A. Joulain (directrice du Département de Physique, UFR SFA): anne.joulain@univ-poitiers.fr


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  • The Max-Planck-Institut für Eisenforschung is seeking for a new Post-Doc, on:

    'Correlative 3D-Precession Electron Diffraction / Atom Probe Tomography'.

    Subject background:

    Scope of the three‐year project is the development of a 3D TEM orientation mapping technique that provides information as known from 3D‐EBSD but non‐destructively and potentially with 50x better nm spatial resolution.

    Your task:

    Establishment of a procedure that allows semi‐automated acquisition of a tilt‐series of 2D‐PED scans and the subsequent measurement of the same specimen by APT. Support the team in Grenoble with the development of the 3D‐PED reconstruction algorithm. Digitally merge multidimensional information from TEM and APT and quantify information on grain boundary segregation. Specimen preparation by focused ion beam milling.

    Candidate:

    We are looking for a highly motivated Post‐Doc with a physics or materials science background. The candidate should have experience with and great interest in TEM method development, digital image processing, programming, multidimensional data analysis and materials science.

    Application:

    The interested candidate should upload a comprehensive application including application letter, detailed scientific CV, his/her publications, two reference /support letters from his professors and details about courses / classes / grades here.

    Further information are available in the following document: «Post-Doc position at MPIE on 3D-PED-APT»


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  • Research at the Institute of Metallurgy and Materials Physics at RWTH Aachen University focuses on fundamental and applied materials physics. Materials are characterised, modelled and improved in interdisciplinary collaborations at national and international level and using state-of-the-art equipment.

    We are looking for:
    An enthusiastic candidate who

    • holds (or will soon hold) a doctoral degree in Materials Science, Materials Engineering or Physics
    • is interested in working on fundamental questions of plastic deformation to ultimately support discovery of new materials for extreme conditions
    • is keen to apply different computational methods at the atomic scale (DFT and/or MD)
    • has a very good command of English (and preferably also German) and enjoys working in a team

    Your responsibilities and the project:

    The vast majority of engineering materials are based on metallic alloys centred around single elements, e.g. Fe, Al, Mg, Ti or Ni. As even the most sophisticated of these are reaching their performance limits, we need to develop completely new classes of materials. With >100,000 binary and ternary systems, intermetallics are a promising candidate; but how can those combining strength and ductility be found?

    These research positions will constitute a team effort at IMM as part of the ERC Starting Grant ‘FunBlocks’ to explore plastic deformation in hard crystals. This will involve mechanical analysis of complex intermetallic crystals from one binary and one ternary system to systematically quantify and compare the properties of their small building blocks and their combinations in large unit cells. This may be done by calculations of generalized stacking fault energies as well as dynamics of dislocation motion to understand the critical mechanisms and configurations of the dislocation cores and how these are affected by the local structure.

    Ultimately, the aim is to provide understanding of essential intermetallic building blocks and enable a data- and knowledge-driven search for new structural materials.

    Depending on previous post-doc experience, this position may be combined with a group leader position, including supervision of doctoral students and funding acquisition.

    We offer:

    The position is offered on a temporary contract for a fixed term of initially 24 months (full-time, extendable to a maximum of 60 months). It is also available as part-time employment per request. The salary is based on the German public service salary scale (TV-L). RWTH Aachen University is certified as a "Family-Friendly University". We welcome applications from all suitably qualified candidates regardless of gender. We particularly welcome and encourage applications from women, disabled persons and ethnic minority groups, recognizing they are underrepresented across RWTH Aachen University. The principles of fair and open competition apply and appointments will be made on merit. RWTH Aachen is an equal opportunities employer. We therefore ask you not to include a photo in your application. For information on the collection of personal data pursuant to Articles 13 and 14 of the General Data Protection Regulation (GDPR), please visit: http://www.rwth-aachen.de/dsgvo-information-bewerbung

    More information and application at the following link:
    https://www.imm.rwth-aachen.de/fileadmin/IMM-Web/Resources/Public/Stellenangebote/Ausschreibung_Crystal-LEGO_2019_12_11.pdf


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  • The Institut Pprime is looking for two master student (last year) for internship on nanotwinned gold thin films.

    First internship:

    Subject: Atomic scale simulations of nanotwinned gold thin films.

    Aim: The aim of this internship is to establish via atomistic scale simulations the elastic strain field associated with different nanotwinned thin film microstructures. Equilibrium conditions will be determined using semi-empirical potentials, that are reliable for gold. In a first step, a simple configuration with a unique twin and periodic boundary conditions will be worked out. This will allow studying the impact of the twins’ density and thickness.More sophisticated and larger systems will then be considered, with several twins having different orientations.

    Dates: the internship is available from February to September 2020, with a vacation period in August.

    Required skills: Applicant has to be in final year of Master and/or engineering school with a background in solid-state physics or materials science. A strong interest in computer simulations.

    More information on the subject, and application can be found in the following document:

    « stage_M2_Brochard-Durinck_PtyMet_2019_en.pdf »

    Second internship:

    Subject: Preparation and characterization of homogeneous nanotwinned gold thin films

    Aim: Various optimizations of the sputtering conditions are envisaged: deposition temperature, substrate, acceleration voltage, etc. The student will work with several techniques:

    • Physical vapor deposition (sputtering) of the thin films.
    • Transmission electron microscopy (TEM) (i) bright field images with large field of view of the sample, (ii) dark field images to select one chosen twin family, (iii) in high-resolution mode to show the roughness of the twin boundaries.
    • X-Ray diffraction to determine with pole figures the twinned volume on a representative (millimetric) scale.
    • Focused ion beam to prepare thin foils for TEM and to observe the film surfaces in scanning electron microscopy.

    Dates: The internship is available from February to September 2020, with a vacation period in August.

    Required skills: Applicant has to be in final year of Master and/or engineering school with a background in solid-state physics or materials science. A strong interest in computer simulations.

    More information on the subject, and application can be found in the following document:

    « stage_M2_Michel_Renault_PtyMet_2019_en.pdf »


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