Magneto-electric composite

Associated people

J. Schröder, M.-A. Keip, M. Labusch

Abstract

Magneto-electric functional materials are of high technical relevance for the advancement and development of new functional devices in medical engineering and information technology. However, these materials become only technologically relevant when the desired coupling between magnetic and electric properties is present in a technically reasonable temperature range. Since this is not the fact for naturally occurring materials, the design of synthetic composite materials is of high scientific importance.
Within the scope of this project magneto-electric composites, consisting of a piezoelectric matrix with magnetic inclusions are modeled and analyzed micromechanically and characterized macroscopically. In order to do so, a fully magneto-electro-mechanically coupled, thermodynamically consistent model is developed for each individual phase on the microscale. Using computational homogenization the (effective) macroscopic response is determined, from which the desired magneto-electric coefficients can be computed.
This project is part of the DFG research group FOR 1509 "Ferroische Funktionsmaterialien - Mehrskalige Modellierung und experimentelle Charakterisierung" (project P1: "Design and analysis of functional composite materials with strain-induced magneto-electric coupling")