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Multifunctional ceramic layers with high electromagnetoelastic coupling in complex geometries

Objective

MULTICERALis a joint effort of eight European research institutions/universities from six countries (UK, Germany, France, Portugal, Slovenia, Lithuania) aimed at the development, detailed characterization, and evaluation of novel multifunctional thin-film materials based on ferroelectrics [Pb(Zr,Ti)O3, BaTiO3, SrBi2Ta2O9], magnetics and shape memory alloys (SMA) (Ni2MnGa, BiFeO3), and relaxors [PbMg1/3Nb2/3O3, Ba(Ti,Zr)O3] assembled in complex geometries. These include planar films and multi-layers, hybrid sol-gel composites, and vertically assembled tube and nanowire arrays. We expect that such geometries will greatly enhance the cross coupling between magnetic, electric, and elastic T-dependent properties and give rise to unrivaled multi-functionalities unavailable so far. For example, the microactuator based on ferromagnetic shape memory alloy/piezoelectric bilayer will respond to electric/magnetic/stress fields while exhibiting two-way shape memory effect. Another example is magnetically tuned capacitor wit h giant magneto-dielectric coupling based on magnetic/piezoelectric multi-layers. At least two prototype devices based on the high cross-coupling effects will be fabricated/tested in this project proving the proposed concepts.

The variety of the available de position techniques combined with using advanced characterization tools will ensure that the desired thin film geometries will be assembled with minimum cross-contamination, non-stoichiometry and defect formation. These efforts will be supported by the extensive modelling activities aimed at the elucidation of the nature of magneto-electroelastic coupling in thin films, calculation of the effect of curved geometries on cross-coupling effects, and influence of disorder and long-range interactions on the properties of multi-layers and magnetic/ferroelectric domain patterns. Finite element calculations will be performed once the physical mechanism of the relevant coupling effect is clarified.

Call for proposal

FP6-2004-NMP-TI-4
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Funding Scheme

STREP - Specific Targeted Research Project

Coordinator

UNIVERSIDADE DE AVEIRO (UNIVERSITY OF AVEIRO)
Address
Campus De Santiago
Aveiro
Portugal

Participants (7)

CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE
United Kingdom
Address
The Old Schools, Trinity Lane
Cambridge
INSTITUT JOZEF STEFAN (J. STEFAN INSTITUTE)
Slovenia
Address
Jamova 39
Ljubljana
UNIVERSITAET DUISBURG-ESSEN (UNIVERSITY OF DUISBURG-ESSEN)
Germany
Address
Forsthausweg 2
Duisburg
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
France
Address
Rue Michel-ange 3
Paris
VILNIAUS UNIVERSITETAS (VILNIUS UNIVERSITY)
Lithuania
Address
Universiteto 3
Vilnius
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES'
France
Address
29 Avenue De La Division Leclerc
Chatillon
UNIVERSITÉ DE PICARDIE JULES VERNE (UNIVERSITY OF PICARDIE JULES VERNE)
France
Address
Chemin De Thil
Amiens