PhD Theses

Zheng Ma will defend his PhD Thesis on 9 Feb 2021 at 11 am!

The PhD researcher Zheng Ma, from the Nanoparticles and Nanocomposites (NN) group at ICMAB, will defend his PhD thesis on Tuesday, 9 February 2021, at 11 am in an online session. The PhD Thesis Defense will be held by videoconference from the ICMAB meeting room. 
Anna
Jan 26, 2021

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

TOC Thesis MA

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