Master internship 5 months between February 2020 and July 2020 on modeling of the functional properties of ceramics with core-shell structure.
Ceramics with core-shell structure have been in development in the past years for very diverse applications because they allow to obtain combinations of properties that can not be obtained with conventional ceramics. We will first look at dielectric materials whose core is of CCTO composition (whose colossal permittivity has been demonstrated) and the shell consisting of one or more layers of an insulator (such as SiO2, Al2O3, etc.). Numerous samples have been produced and characterized in recent years within GREMAN laboratory, providing an important database on which the approach can be based. An on-going PhD thesis aims at optimizing this type of material for applications such as multilayer ceramic capacitors, which will provide other samples. In addition, methods have been developed to model piezoelectric composites or other structured multiphasic materials. Here, the objective is first to adapt these modeling methods to dielectrics with high dielectric permittivity and low losses. Then, the case of the modeling of core-shell piezoelectric materials will be studied with a similar approach, relying this time on experimental results from literature.
Candidates must be registered in a EU (or associated) country's 2nd year of Master's degree (5th year university training according to Bologna agreement, for instance last year of French Engineering degree) in a field linked to materials science or engineering.
Location : GREMAN laboratory, Tours & Blois, France.
An allowance according to French national regulations (currently over 500 euros per month) will be granted during the internship duration (5 months).
Contacts : Dr. Cecile AUTRET (autret@univ-tours.fr), Prof. Marc LETHIECQ (marc.lethiecq@insa-cvl.fr).
