Teresa Puig Molina

Growth of ferroelectric Ba0.8Sr0.2TiO3 epitaxial films by UV pulsed laser irradiation of chemical solution derived precursor layers

Highly crystalline epitaxial Ba0.8Sr0.2TiO3 (BST) thin-films are grown on (001)-oriented LaNiO3-buffered LaAlO3 substrates by pulsed laser irradiation of solution derived barium-zirconium-titanium precursor layers using a UV Nd:YAG laser source at atmospheric conditions. The structural analyses of the obtained films, studied by X-ray diffractometry and transmission electron microscopy, demonstrate that laser processing allows the growth of tens of nm-thick BST epitaxial films with crystalline structure similar to that of films obtained through conventional thermal annealing methods. However, the fast pulsed nature of the laser employed leads to crystallization kinetic evolution orders of magnitude faster than in thermal treatments. The combination of specific photothermal and photochemical mechanisms is the main responsible for the ultrafast epitaxial laser-induced crystallization. Piezoresponse microscopy measurements demonstrate equivalent ferroelectric behavior in laser and thermally annealed films, be...

Encoding Magnetic States in Monopole-Like Configurations Using Superconducting Dots

A large manifold of nontrivial spin textures, including the stabilization of monopole‐like fields, are generated by using a completely new and versatile approach based on the combination of superconductivity and magnetism. Robust, stable, and easily controllable complex spin structures are encoded, modified, and annihilated in a continuous magnetic thin film by defining a variety of magnetic states in superconducting dots.

Vortex dynamics in nanofabricated chemical solution deposition high-temperature superconducting films

This work has been supported by MINECO (MAT2014-51778-C2- n1R, MAT2011-28874-C02-01, Programa CONSOLIDER, CSD 2007-00041), Generalitat de nCatalunya (2014-SGR-00753), European Union, FP7- EU-NMP-LA-2012-280432 EUROTAPES nproject and Cost Action MP1201. ICMAB acknowledges the Severo Ochoa Center nof Excellence mention from MINECO.