Epitaxial growth of complex functional oxide thin films by green and sustainable chemical solution methods

by Hailin Wang, Superconducting Materials and Large Scale Nanostructures (SUMAN) and Advanced Characterization and Nanostructured Materials (ACNM) group

Date: Tuesday, 15 December 2020
Time: 11  am
Venue: Online session from the ICMAB Meeting Room. Register here to attend the PhD Thesis defense via Zoom. 

Abstract: Chemical solution deposition (CSD) techniques are promising methodologies to achieve epitaxial oxide thin films combining high performance with high easy scalability, environment friendly fabrication and low cost.

In this thesis, the polymer-assisted deposition (PAD), an aqueous environmentally friendly CSD method, is used to prepare derivatives of lanthanum manganite perovskite films, including La₂CoMnO₆, La₂NiMnO₆ double perovskites and La_0.92MnO₃ films, on SrTiO₃ or LaAlO₃ substrates. We evidenced that the particular growth process and crystallization conditions of PAD (very slow rate, close to thermodynamic equilibrium conditions) promote the high crystallinity and quality of the films, as well as favor high cationic ordering. The PAD technique allows obtaining complex oxide thin films of high microstructural quality suitable for spintronics applications.

Supervisors:

• Narcís Mestres, SUMAN group, ICMAB-CSIC
• Benjamín Martínez, ACNM group, ICMAB-CSIC

PhD Committee:

• President: Amilcar Labarta, UB,  Barcelona, Spain
• Secretary: José Santiso, ICN2,  Bellaterra (Barcelona), Spain
• Vocal: Adrián Carretero,  CNRS- Montpellier, France

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