The internship offers are listed here.
PhD co-advisor
New developments in X-ray absorption spectroscopy dedicated to innovation:The case of molecular memories for high density data storage
PhD main advisor : Anne Bleuzen
PhD student : Adama N'Diaye
Defended on Feb. 11th 2012 ; Funded by ANR MagDiDi ; ED 571 "Sciences chimiques: Molécules, matériaux, instrumentation et biologie"
Summary
The increasing demands for improved data storage eventually require a technological mutation. Photoswitchable molecular materials offer appealing perspectives and the goal of this thesis project is to transform this attractive idea into a realistic alternative. Metal-metal charge-transfer inorganic compounds are very interesting candidates but their photoswitching properties are observed at too low temperature to be used in any application. One way to adjust their property is to modulate the fine distortions of their structure. The objective of this interdisciplinary (physics and chemistry) thesis is therefore to elucidate the relationship between slight structural distortions and photoswitching properties in model compounds: Prussian Blue Analogs (PBAs). To reach this goal we will develop a new tool based on the X-ray magnetic circular dichroism (XMCD) at the K-edge of transition metals. PBAs will be first used as model-compounds so that chemistry helps solving physical problems; they will enable to establish a methodology for the quantification of slight structural distortions from TM K-edge XMCD and to deeply understand physical processes originating TM K-edge XMCD. PBAs will then be considered as solutions to the problems currently meet in the area of data storage, this time the physical tools allowing chemistry to answer today’s technological challenges.
The subject described in details is available HERE .
Internships
Master 2 (5 months)
2018
Investigation of the origin of photomagnetism in Prussian Blue analogs
Inorganic syntheses ; Powder X-ray diffraction ; SQUID magnetometry ; Synchrotron experiments ; XAS data treatment
2016
A multiscale investigation of photoswitching in Prussian Blue analogs
Inorganic syntheses ; Powder X-ray diffraction ; SQUID magnetometry ; Electronic microscopy ; Synchrotron experiments ; XAS data treatment
L3 (7 months)
2020
Investigation of alkali cation-containing Prussian Blue analogs and derivatives by X-ray absorption spectroscopy
Synchrotron experiments ; XAS data treatment
L3 / 1st year magister (8 weeks)
2020
The degradation phenomena of Prussian Blue in cultural heritage objects
Bibliographic work
2018
An X-ray absorption spectroscopy study of Prussian Blue analogs
XAS data treatment
2016
Syntheses and X-ray diffraction analyses of NiFe Prussian Blue analogs
Inorganic syntheses ; Powder X-ray diffraction ; Infrared spectroscopy ; thermal treatment
2016
Syntheses and characterization of Prussian Blue analogs — Effect of the thermal treatment for the formation of oxides and alloys
Inorganic syntheses ; Powder X-ray diffraction ; Infrared spectroscopy ; Thermal treatment
2016
NiFe Prussian Blue analogs used as a precursor of mixed oxides
Inorganic syntheses ; Thermal treatment ; Powder X-ray diffraction ; Electronic microscopy
2015
Investigation of the photomagnetic properites of a Prussian Blue analog using synchrotron radiation
Synchrotron experiments ; XAS data treatment
DUT (10 weeks)
2018
Syntheses and characterizations of the CoFe and NiCr Prussian Blue analogs
Inorganic syntheses ; Powder X-ray diffraction ; Infrared spectroscopy ; Electronic microscopy
2018
Syntheses and characterizations of the MnFe and CuFe Prussian Blue analogs
Inorganic syntheses ; Powder X-ray diffraction ; Infrared spectroscopy ; Electronic microscopy
PhD theses : Partial and/or targeted co-advising
On going
G. Balthazar
Effect of size reduction of Prussian Blue analogs particles on their photoswitching properties
Formation and accompagnying to X-ray absorption spectroscopy
2021
L. Altenschmidt
Formation and accompagnying to X-ray absorption spectroscopy, redaction of the manuscript and publications, preparation of communications, post-PhD accompanying
2016
R. Moulin
Redaction of the manuscript, preparation of communications