Determination of the magnetoelectric coupling by analysis of the ferroelectric polarization curve in magnetoelectric and heterostructured systems

• Grant number: 20/06570-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: September 01, 2020
• End date: August 31, 2022
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Fabio Luis Zabotto
• Grantee: Rodrigo Ambrosio Rodrigues de Carvalho
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 17/13769-1 - Multiferroic and ferroelectric materials for energy converters: synthesis, properties, phenomenology and applications, AP.TEM

Abstract

This research project proposes the creation of a systematic analysis protocol for the different contributions in the ferroelectric hysteresis loops in magnetoelectric multiferroic systems by application of a magnetic field, thus allowing the understanding of the nature of the magnetoelectric coupling. The investigated materials to be analyzed are magnetoelectric multifunctional nanostructures based on the system Pb(Zr,Ti)O3/BaFe12O19, Pb(Zr,Ti)O3/CoFe2O4 and Pb(Zr,Ti)O3/NiFe2O4 manufactured by the physical deposition via RF-Sputtering technique, as well as PZT-PFN single-phase multiferroic systems. By using an already home-built ferroelectric data acquisition and analysis system coupled with a magnetic field platform, it will be possible to determine the different existing contributions in the ferroelectric hysteresis that are under major influence of the magnetic field; therefore, making it possible to differentiate the effects of magnetoelectric, magnetoresistive and/or magnetocapacitive nature in nanostructured and single-phase systems. In addition to that, by developing the related activities of this project, the student will have a major contribution to his academic and scientific formation, mainly in condensed matter physics and development of new materials.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CARVALHO, R. A. R.; BONINI, R. P.; BARBOSA, V. M. F.; BOTERO, E. R.; ALKATHY, MAHMOUD S.; EIRAS, J. A.; ZABOTTO, F. L.. A phenomenological model for the magnetodielectric effect in magnetoelectric composites. Journal of Magnetism and Magnetic Materials, v. 580, p. 5-pg., 2023-06-07. (19/03110-8, 20/06570-7)