TUMOCS — TUneable Multiferroics based on oxygen OCtahedral Structures

Results in brief

TUneable Multiferroics based on oxygen OCtahedral Structures

Development of new wireless and low energy consuming micro-sized sensors is extremely important because of the growing demands for effective monitoring of the operational status of mechanisms, environmental conditions, and safety systems (including those designed to avert terroristic threats). Materials that combine magnetic, polar, and elastic orders (so called multiferroics) are considered as active elements in various new-generation sensors. The main objective of this project was development of novel environmental friendly multiferroics based on metastable perovskites and on layered double hydroxides in which a cross-coupling between ferroic order parameters can be tuned by both internal and external factors. Such materials in forms of films and/or arranged layers find use as magnetic field sensors, sensors of deformation/shock, and environmental sensors. Since the objectives to prepare, characterize, optimize, and modify these novel multiferroic materials required consolidation of specialists of complementary expertise in Physics, Chemistry, and Material Science and Engineering, with access to and skills in using specific and unique equipment and facilities, the interdisciplinary network of teams with different scientific culture and ensuring the effective knowledge & expertise transfer has been formed. The overall objectives of the project have been achieved. Novel approaches to predict, design and produce new magnetic and multiferroic materials: complex oxides with perovskite-type structure and layered double hydroxides have been suggested and proved. Although Bi-containing compositions were initially considered, it has been found that these approaches can be successfully applied to chemically diverse perovskite-related oxides and layered double hydroxides. The interdisciplinary network of the project has demonstrated its efficiency and a stable trend to extension via new projects and other collaboration schemes with new teams that conduct research in related areas.

Data: CORDIS, © European Union

Project objective

The main objective of the project is development of new lead-free multiferroic materialshe for prospective application in forms of films and/or arranged layers in which the cross-coupling (magnetic-dipolar-elastic) can be tuned by both internal and external factors. This objective is to be achieved through preparation, investigation, and optimization of two kinds of Bi-containing oxygen-octahedral (BCOO) systems with paramagnetic ions involved: metastable perovskites and layered double hydroxides (LDHs). The characteristic feature of such materials is a possibility of supplementary control parameters in addition to temperature and external electric/magnetic field. Polarization in such metastable perovskites is easily switched by application of external pressure (or stress in the case of films). Electric and magnetic characteristics of BCOO LDHs are tuned through appropriate anion exchanges. It makes these characteristics dependent on environment conditions: humidity, pH, and presence of specific anion species. The BCOO materials of both mentioned groups are of interest as new and unusual multiferroics. No LDH materials have been considered as potential multiferroics so far, while the metastable BCOO materials proposed in this project have not been obtained before. Besides, a tuneability and high sensibility of their properties to external impacts make them promising for applications in sensors. Exploration and development of such materials require consolidation of specialists of complementary expertise in Physics, Chemistry, and Materials Science, with access to and skills in using specific and unique equipment and facilities. Therefore, formation of an interdisciplinary network of teams with different scientific culture and ensuring the effective knowledge & expertise transfer is important objective of the project. Advance in development of the BCOO multiferroics has potential market opportunities for R&D SME involved in this project.

Original text from CORDIS.

Participants

UNIVERSIDADE DE AVEIRO · AveiroCoordinatorPortugal
HELMHOLTZ-ZENTRUM HEREON GMBH · GeesthachtGermany
INSTITUTE FOR LOW TEMPERATURE PHYSICS AND ENGINEERING of NASU · KHARKIVUkraine
SMALLMATEK - SMALL MATERIALS AND TECHNOLOGIES LDA · AVEIROPortugal
SSPA SCIENTIFIC AND PRACTICAL MATERIALS RESEARCH CENTRE OF NAS OF BELARUS · MinskBelarus
UNITED KINGDOM RESEARCH AND INNOVATION · SWINDONUnited Kingdom
UNIVERSITAET DUISBURG-ESSEN · EssenGermany
VILNIAUS UNIVERSITETAS · VilniusLithuania

TUMOCS · TUneable Multiferroics based on oxygen OCtahedral Structures

Results in brief

TUneable Multiferroics based on oxygen OCtahedral Structures

Project objective

Participants

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