Objective Very recent findings by our group and others reveal that ferroelectric interfaces can show strongly enhanced properties and remarkable new effects with potential for exploitation in devices. In particular, new phases at broadened domain walls [DWs], conductivity and possibility for ferromagnetism in ferroelectric DWs and giant response in materials possessing high density ferroelectric DWs were shownDWs form spontaneously in ferroelectrics. Their functionality, widely recognized is neither quantified nor controlled. Distinctly from other interfaces, ferroelectric DWs are mobile, can be modified dynamically by external forces (electrical, stress, temperature variation) and can, moreover, be annihilated and recreatedWhat are the mechanisms to functionalize DWs? How to gain control over the structure and dynamics of these DWs, and what are the potential breakthroughs that such control may lead to? What additional properties of DWs await discovery? We will address these questions through several interrelated objectives designed to cover both fundamental aspects, as well as limits of applicabilityConsidering a single DW as a device that can be created, displaced and eliminated reversibly in-situ is unique to this project. Working with ordered arrays of DWs is another central theme. To create controlled patterns of DWs we will use top-down and bottom-up approaches. Characterization of DWs will range from investigation of the internal structure by Spherical Aberration Corrected HRTEM through cryogenic Piezo Force Microscopy study of DW phase-transition, to macroscopic characterization over a broad frequency and driving stimulus range. Theory will guide the investigation. Device concepts will be demonstrated, such as DW-enhanced ultrasonic transducer, DW transistor and ferroelectric string memoryWe believe that attainment of these objectives should lead to conceptual breakthroughs both in our understanding of ferroelectric interfaces and in their applications. Fields of science natural sciencesphysical sciencesopticsmicroscopy Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) ERC-AG-PE5 - ERC Advanced Grant - Materials and Synthesis Call for proposal ERC-2010-AdG_20100224 See other projects for this call Funding Scheme ERC-AG - ERC Advanced Grant Coordinator ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE Address Batiment ce 3316 station 1 1015 Lausanne Switzerland See on map Region Schweiz/Suisse/Svizzera Région lémanique Vaud Activity type Higher or Secondary Education Establishments Administrative Contact Caroline Vandevyver (Dr.) Principal investigator Nava Setter (Prof.) Links Contact the organisation Opens in new window Website Opens in new window EU contribution No data Beneficiaries (1) Sort alphabetically Sort by EU Contribution Expand all Collapse all ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE Switzerland EU contribution € 2 475 600,00 Address Batiment ce 3316 station 1 1015 Lausanne See on map Region Schweiz/Suisse/Svizzera Région lémanique Vaud Activity type Higher or Secondary Education Establishments Administrative Contact Caroline Vandevyver (Dr.) Principal investigator Nava Setter (Prof.) Links Contact the organisation Opens in new window Website Opens in new window Other funding No data
