Synthesis and Characterization of ε-Fe2O3 Nanoparticles and Thin Films
by Zheng Ma, Nanoparticles and Nanocomposites (NN) group, ICMAB, CSIC
Date: Tuesday, 9 February 2021
Time: 11 am
Venue: Online session from the ICMAB Meeting Room. Register here to attend the Defense by Zoom.
Abstract: During the last two decades, the ferric oxide polymorph ε-Fe2O3 has transitioned from being a scientific rarity to attracting increasing attention for its multiferroic character and huge coercive field at room temperature. Such uncommon properties bring out fundamental aspects related to its complex magnetic phase diagram and also make ε-Fe2O3 appealing for applications in information technologies.
This thesis explores the synthesis and characterization of ε-(Fe1-xMx)2O3 nanoparticles in which Fe3+ is substituted by other magnetic transition metals (Cr, Mn, Co and Ru). The site-selective occupation of the dopants provides insights into the complex physics of this polar oxide. In addition, the thesis studies the stabilization of ε-Fe2O3 epitaxial thin films on various substrates, including spinel MgAl2O4 (111) and flexible mica and their structural and magnetic properties
Supervisor:
- Martí Gich, NN group, ICMAB, CSIC
PhD Committee:
- President: Javier Blasco Carral, Universidad de Zaragoza, Spain
- Secretary: Joan Manel Hernàndez Ferràs, Universitat de Barcelona, Spain
- Vocal: Nathalie Viart, Université de Strasbourg, France
University: Universitat Autònoma de Barcelona (UAB)
PhD Programme: Materials Science
