DTU Studieprojekt - Alkaline elements doping in Fe(SeTe) wires for enhanced superconducting performance

Alkaline elements doping in Fe(SeTe) wires for enhanced superconducting performance

Udbyder
Vejleder
Sted
København og omegn
Background
Among the recently discovered Iron based superconductors, those with the highest transition temperatures (Tc) invariably contain arsenic, which make them unsuitable for large-scale commercialization of superconducting wires. Fe(Se,Te), has a modest Tc of about 15K but it has been reported that intercalation of e.g. lithium or potassium can result in a significant increase of this Tc up to 40K or even more. The techniques presently used for introducing these additional elements in the structure of Fe(Se,Te) are not practical for manufacturing superconducting wires so that new technological developments are necessary. The aim of this project is to fabricate superconducting wires consisting of a Fe sheath and a Fe(Se,Te) core using innovative ways for intercalating lithium in such a way that the Tc of the superconducting core can be actually raised in the vicinity of 40K.

During this project you are going to:
-Produce doped Fe(Se,Te)-based superconducting wires.

-Conduct microstructural characterization of your samples by means of X-ray diffraction, optical and electron microscopy.

-Perform magnetization measurements at cryogenic temperatures under magnetic field to evaluate the superconducting performance of your samples.

-Analyze your experimental results using state of the art theoretical models.

Learning objectives:
At the end of this project you will be able to:

-Use various 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.

-Critically evaluate your results.

-Draw links between microstructure and performance.

-Perform an efficient literature search and compare your own results to published data.

-Present your results to a scientific audience under conditions equivalent to an international conference.

-Write the draft of a scientific publication.

Contact: Jean-Claude Grivel (jean@dtu.dk) – DTU Energy, building 301 (from 11/2019)

Emneord

• Energi
• Bioenergi
• Brændselsceller
• Elforsyning
• Energieffektivisering
• Energilagring
• Energiproduktion
• Energisystemer
• Kraftværker
• Solenergi
• Vindenergi
• Klimatilpasning

Navn
Jean-Claude Grivel

Stilling
Seniorforsker

Mail
jean@dtu.dk

Vejleder-info
Kandidatuddannelsen i Bæredygtig Energi
Vejleder
Jean-Claude Grivel

ECTS-point
30

Type
Kandidatspeciale