Seminaria

Dnia 2024-06-18 o godzinie 13:15 w Sali 2011 Wydziału Fizyki UwB, dr Robert Kruk z Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Eggenstein-Leopoldshafen, Niemcy wygłosi wykład pt:

„Magnetoelectrics: A case where energy storage meets magnetism”

Serdecznie zapraszamy

Andrzej Maziewski

Jerzy Przeszowski

„Magnetoelectrics: A case where energy storage meets magnetism”

Robert Kruk

Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Niemcy

The magnetoelectric effect is at the heart of advanced technologies that enable efficient information processing, data storage, and signal processing while minimizing power consumption.

The concept of using electrochemical phenomena such as surface chemistry (found in pseudocapacitors) and ion exchange (found in batteries) to create magnetoelectric coupling has been proposed and developed. By carefully selecting materials, a magnetic response to an applied voltage can be induced either by modulating the concentration of electric charges at the interface between magnetic and electric materials, or by allowing the flow of ions across this interface. This approach expands the pool of materials amenable to voltage-driven tuning and overcomes the limitations of some of the conventional options [1].

This presentation will cover the basic principles and critical considerations that are essential for the realization of electrochemically tunable magnetic systems. Furthermore, exemplary applications of this voltage-driven tunability paradigm will be presented, including the reversible manipulation of magnetic states in strongly correlated oxides [2,3], ferrimagnetic spinels [4], and metallic permanent magnets [5,6].

1. C. Leighton, et al., APL Mater. 10, 040901 (2022)
2. A. Molinari, et al., Advanced Materials, 31, 1806662, (2019)
3. A. Molinari, et al., Nature Communication, 8, 15339, (2017)
4. S. Dasgupta, et al, Advanced Functional Materials, 26, 7507, (2016)
5. X.L.Ye, et al., Advanced Materials, 33, 5, 2006853 (2021)
6. X.L. Ye, et al., Nature Communications, 11, 4849 (2020)