Study and multiscale modeling of new ferroelectric oxides – NOVOXFER
Financed by the Romanian National Authority for Scientific Research, CNCS – UEFISCDI, project PN-III-P3-3.1-PM-RO-FR-2019-0069
The major objective of this project is to create an active collaboration between two groups of researchers with complementary knowledge (physicists, chemists) and experimental facilities: a group from "Al. I. Cuza" University of Iasi, Romania (UAIC) and the group from Univ. D'Artois, Lens, France (UCCS). The aim is to investigate in a synergic and multidisciplinary way through experimental activities from nanoscale to macro-scale and using modeling approach a topic of high actuality, namely, a complex study of the structural, dielectric, ferro- and piezoelectric properties of new classes of lead-free oxides with potential applications in the field of conversion, storage and energy recovery. The proposed systems for this study are: (i) A2WO6 class (A = lanthanides Ln3+ or Bi3+), in which ferroelectricity has not been confirmed up to date except at nanoscale and only in thin films; (ii) BaTiO3- based binary and ternary solutions: (Ba,Ca)(Ti,M)O3 (M = Zr4+, Sn4+, Ce4+), where it is expected to generate extraordinary properties (pyro-, piezo-, ferroelectricity, tunability, giant permittivity) in the range of concentrations for which there is a coexistance of polymorphs. The main expected results are: reciprocal extension of knowledge and scientific competences through bilateral visits and active collaboration, investigation of new classes of ferroelectrics, valuable publications in the proposed topics, creating the premises for future joint participation to other international projects.