Chemical solution route to self-assembled epitaxial oxide nanostructures
X. Obradors, T. Puig,* M. Gibert, A. Queraltó, J. Zabaleta and N. Mestres
Chem. Soc. Rev., 2014,43, 2200-2225
Author: Albert Moreno
Ziliang Li, a new PhD student at SUMAN
Zilian Li from China, after obtaining his master’s degree of Materials Science in University of Science and Technology of Beijing, joined SUMAN group to start his PhD thesis on “Fast growth of nanostructured coated conductors from chemical solutions” under the supervision of Dr. Mariona Coll and Prof. Xavier Obradors. Welcome Ziliang!
Jose Antonio’s final degree project (Nanoscience and Nanotechnology)
Jose Antonio Peña, student on the last year of Nanoscience and Nanotechnology degree (UAB), has joined SUMAN group to do the final year degree project on “Growth of YBCO layers on CZO buffered substrates” under the supervision of Dr. Cornelia Pop.
Welcome Jose Antonio!
Low Temperature Stabilization of Nanoscale Epitaxial Spinel Ferrite Thin Films by Atomic Layer Deposition
M. Coll, J. J. Montero, J. Gazquez, K. Nielsch, X. Obradors and T. Puig
Advanced Functional Materials, 24, 5368-5374 (2014)
DOI: 10.1002/adfm.201400517
In this work heteroepitaxial stabilization with nanoscale control of the magnetic Co2FeO4phase at 250 °C is reported. Ultrasmooth and pure Co2FeO4 thin films (5–25 nm) with no phase segregation are obtained on perovskite SrTiO3 single crystal (100) and (110) oriented substrates by atomic layer deposition (ALD). High resolution structural and chemical analyses confirm the formation of the Co-rich spinel metastable phase. The magneto-crystalline anisotropy of the Co2FeO4 phase is not modified by stress anisotropy because the films are fully relaxed. Additionally, high coervice fields, 15 kOe, and high saturation of magnetization, 3.3 μB per formula unit (at 10 K), are preserved down to 10 nm. Therefore, the properties of the ALD-Co2FeO4 films offer many possibilities for future applications in sensors, actuators, microelectronics, and spintronics. In addition, these results are promising for the use of ALD compared to the existing thin-film deposition techniques to stabilize epitaxial multicomponent materials with nanoscale control on a wide variety of substrates for which the processing temperature is a major drawback.
Jaume Gazquez at ORNL for microscopy experiment
During July 2014, Dr. Jaume Gazquez visited Oak Ridge National Laboratory to work with the STEM Group on complex oxides interfaces by means of aberration corrected scanning electron microscopy techniques.
Anna Palau at Helmholtz Zentrum Berlin for X-PEEM measurements
From 21st to 27th of July, Dr. Anna Palau visited the synchrotron radiation source BESSY II at Helmholtz Zentrum Berlin to perform X-PEEM space resolved magnetic measurements in hybrid superconductor-magnetic systems.
Jordi and Gerard, Nanoscience and Nanotechnology visitor students from UAB
During the first semester of 2014 we hosted two visitor students from the Nanoscience and Nanotechnology degree from Universitat Autònoma de Barcelona to complete their final degree work. Jordi Antoja’s work concerned “Towards nanofabricated pinning sites in high-Tc superconducting thin films based on the Resistive Switching phenomenon” under the supervision of Dr. Anna Palau. Gerard Pedreira was devoted to “Growth and characterization of thin oxides films with Resistive Switching properties”, supervised by Dr. Narcís Mestres.
Visitor student from Pennsylvania State University Materials Science and Engineering
Zack Khayat, student of Materials Science and Engineering at Pennsylvania State University from the group of Susan Trolier-McKinstry, spent three months in our laboratories to work on “Growth and characterization of Atomic Layer Deposited BiFeO3 for Energy Applications” under the supervision of Dr. Mariona Coll.
2014
Title: Research today to innovate tomorrow! Presentation of the EUROTAPES EU research project
Authors: X. Obradors and M. Tristany
Conference Name: EU Open doors day 2014
Place: Brussels (Belgium)
Date: 17 May 2014
14th-18th July 2014: Bernat Mundet at TEM-UCA workshop
Between 14th and 18th July, Bernat Mundet attended to the TEM-UCA Summer Workshop “Transmission Electron Microscopy of Nanomaterials” hold at University of Cádiz. The workshop was devoted to review the advancements of Transmission Electron Microscopy, both imaging and spectroscopic techniques, in the characterization of a wide range of nanomaterials.
http://www2.uca.es/dept/cmat_qinor/catalisis/tem-uca/home.htm
