Iron based superconductors
have been discovered eight years ago only and have unleashed tremendous
research and development activities throughout the world due to their unusual
properties compared to classical and cuprate superconductors. From the point of
view of applications, the huge critical magnetic field exhibited by iron-based
superconductors is especially promising for very high field power devices.
However, there are still plenty of open questions, which need to be answered to
be able to exploit this unique potential. The aim of this work is to contribute
to the knowledge of iron-based superconductors and/or perform pioneering work
relating to the manufacture of long wires in view of applications in magnets,
generators, fusion reactors, etc. We shall concentrate on compounds that do not
contain arsenic, since the toxicity of this element precludes the large scale
use of FeAs-based superconductors. We can
propose a variety of projects covering different aspects of research ranging
from fundamental physics to applied technology e.g.:
the effects of doping foreign elements on the superconducting properties.
of a chemical bath deposition technology for coating long tapes.
and characterization of long wires by in-situ and ex-situ techniques.
optimization of bulk samples by use of uniaxial pressure during reaction.
During this project you are going to:
FeSe-based superconductors by various techniques depending on your project.
microstructural characterization of your samples by means of X-ray diffraction,
optical and electron microscopy.
magnetization, evt. transport measurements at cryogenic temperatures under
magnetic field to evaluate the superconducting performance of your samples.
experimental results using state of the art theoretical models.
At the end of
this project you will be able to:
experimental characterization tools (X-ray diffraction, thermal analysis, infrared
spectroscopy, electron microscopy, low temperature magnetization measurements,
etc.) and explain their basic principles as well as limitations.
evaluate your results.
between microstructure and performance.
efficient literature search and compare your own results to published data.
results to a scientific audience under conditions equivalent to an international
draft of a scientific publication.