Ferroic Functional Materials: Experiment, Modeling and Simulation

September 8, 2014 — September 12, 2014

Coordinators:

  • Jörg Schröder (University of Duisburg-Essen, Essen, Germany)
  • Doru C. Lupascu (University of Duisburg-Essen, Essen, Germany)

Functional materials play a key role in many modern technical devices ranging from consumer market items to applications in high-end equipment for automobile, aircraft and spacecraft, military, and information technology. Among functional materials, smart materials represent a class that transforms one basic physical property into another. The development of devices utilizing smart materials, as well as their testing, are generally very expensive. Therefore, considerable effort has been made to develop modeling tools that allow bypassing many of the experimental steps previously required in design.

The most important smart materials are certainly ferroelectrics (coupling between polarization and strain), ferromagnets (coupling between magnetization and strain), shape- memory alloys (coupling between temperature and strain), and the recently discovered magneto-electric multiferroics (coupling magnetization and polarization).
In particular, magnetoelectric multiferroics, that combine the mutual controllability of magnetic and electric state variables in one single material, are of the greatest interest in the development of multifunctional devices devoted to new advanced applications. In single-phase multiferroics, on the other hand, the interaction between the magnetic and electric fields is generally weak and, consequently, composite materials consisting of ferroelectric and ferromagnetic phases become relevant. The experimental preparation and characterization of composite materials, as well as their constitutive description based on homogenization strategies, are key challenges for the optimization of such magneto-electric composites. Furthermore, the coupled and non-linear behavior of the individual phases, as well as their interactions, have a significant impact on the overall performance of the composite material.
The development of new multifunctional devices made from ferroics is based on a comprehensive understanding of both the experimental and theoretical details of these materials. Thus, the lectures will cover experiments and theory in the fields of ferroelectrics, ferromagnets, ferroelastics, and multiferroics. The range of topics covered will include experimental preparation and characterization of magneto-electric multiferroics, the modeling of ferroelectric and ferromagnetic materials as well as of shape-memory alloys, the formation of ferroic microstructures and their continuum-mechanical modeling, computational homogenization, and the algorithmic treatment in the framework of numerical solution strategies.

The course is addressed to doctoral students and postdoctoral researchers in civil and mechanical engineering, materials science, physics and applied mathematics as well as industrial researchers. After the course participants will have a basic knowledge in experiments and theory in the framework of ferroic materials. A main focus will be on state-of-the-art experimental methods and advanced modeling techniques. These notions are essential to qualify young scientists for high-quality research and the development of innovative products and applications. Up to now, there are neither adequate textbooks nor advanced courses at research- or university-level available in this field. Thus, the aim of this CISM course is to fill such a gap and we are convinced that it will be successful in doing this.

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