High Tc Magnetic Spirals and Fe-based Frustrated Multiferroics

Arnau Romaguera Camps, Crystallography of Magnetic and Electronic Oxides and Surfaces (CMEOS) group at ICMAB-CSIC

Date: Monday, 13 March 2023
Time: 11:30 AM
Venue: Institut de Ciència de Materials de Barcelona (ICMAB, CSIC) - Sala d'Actes Carles Miravitlles

Abstract:

Multiferroic materials with magnetoelectric coupling are promising candidates for low-energy switching in data storage devices and might lead to ultra-low-power electronics. However, magnetoelectric multiferroics are rare because the mechanisms generating electric and magnetic polarization are often mutually exclusive. This research focuses on two specific ferrite systems: YBaCuFeO₅ and ε-Fe₂O₃, whose attractive magnetic and ferroic properties have the potential to be exploited above room temperature (RT).

Supervisors:

• José Luis García-Muñoz, CMEOS group, ICMAB-CSIC
• Javier Herrero-Martín, ALBA Synchrotron

• President: Luis Fernández Barquín, Universidad de Cantabria, Spain
• Secretary: Arantxa Fraile Rodríguez, Universitat de Barcelona, Spain
• Vocal: Pascal Manuel, ISIS Neutron & Muon Facility (STFC Rutherford Appleton Lab), United Kingdom 

University: Universitat Autònoma de Barcelona (UAB)
PhD Programme: Materials Science

Role of Fe/Cu chemical disorder on the incommensurate spiral phase in YBCFO. Temperature evolution of the neutron diffraction intensities and magnetic phase diagram. | Arnau Romaguera