batifer – Project Website

Funding: State budget

Grant: PN-III-P4-ID-PCE-2016-0072 (contract no. 134/13.07.2017)

Title: CONTROLLED FUNCTIONALITIES IN MULTISCALE BaTiO₃-BASED SYSTEMS BY COMBINING MICROSTRUCTURAL DESIGN AND DOPING STRATEGY (BATIFER)

Value of the contract: 850 000 lei

Period: 30 months (July 2017- December 2019)

Team:

Project Manager:

Dr. Eng. Adelina-Carmen Ianculescu – Professor – “POLITEHNICA” University of Bucharest, Faculty of Applied Chemistry and Materials Science

Team’s members:

Eng. Daniela Cristina Berger – Professor – “POLITEHNICA” University of Bucharest

Eng. Maria Crişan – Senior Scientist – Institute of Physical Chemistry “Ilie Murgulescu”– Romanian Academy, Bucharest

Ioana Pintilie – Senior Scientist – Institute of Materials Physics, Măgurele – Bucharest

Dr. Eng. Mihai Alexandru Eftimie – Associate Professor – “POLITEHNICA” University of Bucharest

Dr. Eng. Bogdan Ştefan Vasile – Senior Scientist – “POLITEHNICA” University of Bucharest

Dr. Eng. Cătălina Andreea Stanciu (Vasilescu) – Senior Scientist – National Institute for Lasers, Plasma and Radiation Physics, Măgurele – Bucharest

Eng. Roxana Truşcă – Research Assistant – “POLITEHNICA” University of Bucharest

Adina Mara Mihai – PhD Student – “POLITEHNICA” University of Bucharest

Vasile – Adrian Surdu – PhD Student – “POLITEHNICA” University of Bucharest

Adrian Ionuţ Nicoară – PhD Student – “POLITEHNICA” University of Bucharest

Abstract:

The aim of this project is to propose a new approach for investigating the influence of the extrinsic versus intrinsic contributions on the electrical behaviour in the compositionally modified-BaTiO₃-based systems. Therefore, aliovalently and homovalently doped-BaTiO₃ ceramics, with certain fixed dopant/solute concentrations and with a wide range of grain sizes, from microscale downward to nanoscale, will be prepared from powders synthesized by various variants of the sol-gel method and consolidated by using alternative sintering techniques (conventional and spark plasma sintering). In this way, it is envisaged to adjust the semiconducting-insulating behaviour in multiscale Ce³⁺ doped-BaTiO₃ and to tailor ferroelectric-relaxor crossover in multiscale BaTiO₃ ceramics with Hf⁴⁺ additions. Another goal consists in enhancing ferroelectricity in dense Ce³⁺ doped-BaTiO₃ (BCT) thin films and 1D nanostructures. The investigation of Ce³⁺ doped-BaTiO₃ products with similar composition, but corresponding to dissimilar dimensionalities (1D, 2D and 3D), will allow elucidate and to understand the role of the restrictive geometries on the dielectric/ferroelectric/piezoelectric response. For this reason, multilayer thin films will be prepared by chemical solution deposition, while infiltration of negative templates will be used to elaborate 1D nanostructured wires/tubes. All these objectives involve a complex physico-chemical and functional characterization by using modern and complementary techniques.

Batifer Project