Stewart Leith ESR 14 Universitt Siegen stewart leithunisiegen
- Slides: 11
Stewart Leith (ESR 14) Universität Siegen stewart. leith@uni-siegen. de EASITrain – European Advanced Superconductivity Innovation and Training. This Marie Sklodowska-Curie Action (MSCA) Innovative Training Networks (ITN) has received funding from the European Union’s H 2020 Framework Programme under Grant Agreement no. 764879
Contents 1. Research topic description 2. Work plan and intended outcomes 3. Challenges and how to mitigate them 4. Status 2 S. Leith, 22. 05. 2021
Research Topic Description ■ DC and Hi. PIMS Cathodes 400 mm Ø 400 mm 3 *[1] M. Vogel. Proceedings of Aries 4 th WP 15 meeting. (2018) S. Leith, 22. 05. 2021
Research Topic Description 2. Production of a quality assessment matrix based on microstructural and electrical properties as a function of substrate type and substrate temperature. 65 mm Cu sample. 3 *[2] M. Vogel. Proceedings of Aries 1 st WP 15 meeting. (2017) S. Leith, 22. 05. 2021
Research Topic Description 3. Optimisation of the synthesis process with respect to RF performance. Correlation of essential process parameters with the thin-film structure and its characteristics. RF characteristics will be determined by ESR 8 at HZB. 65 mm diameter disk sample from HZB. [3] O. Kugeler et al, Activities with the quadrupole resonator at HZB, Proceeding of the Eu. CARD-2 3 rd Annual WP 12 Meeting (2016) 4 S. Leith, 22. 05. 2021
Work Plan Nb thin-film Starting Point for investigation. Learning phase of sputtering and characterisation methods Temperature control Pressure control Plasma control Gas type effects 5 Nb. N thin-film Process started once comfortable with Nb Stoichiometry control Process started once comfortable with Nb. N Highest complexity S. Leith, 22. 05. 2021
Work Plan (2) Sample Preparation • OFE Copper • Mechanical Polishing • Chemical Polishing • • • Sample Analysis • • SEM, XPS, FTIR, XRD, EDX, RRR EDX = Chemical Analysis SEM = Microstructural analysis RRR = Electrical Analysis RF Characterisation • Conducted at HZB by ESR 8 • Sample to be sized according to HZB requirements • Provides feedback regarding deposition parameters 6 S. Leith, 22. 05. 2021
Intended Outcomes ■ Improve and quantify substrate handling procedure and preparation process to obtain homogeneous coatings in a reproducible fashion (D 3. 1) ■ Understanding of interdependencies of the synthesis process and parameters and how they affect the outcome of thin-film coatings (D 3. 2) ■ Construction and utilisation of RRR (Residual Resistance Ratio) test setup ■ Construction and use of dedicated high temperature thin-film synthesis system ■ Document training contents concerning the synthesis of low-temperature superconducting thin-films (D 5. 2) 7 S. Leith, 22. 05. 2021
Challenges and mitigation strategies ■ 8 S. Leith, 22. 05. 2021
Status Ø Currently in the learning phase: Sample preparation procedures, sputtering and microstructural analysis methods to be learnt in parallel. Just begun. Ø Initial samples foreseen as soon as possible: The production of worthwhile samples will take some time due to the learning curve. Initial preliminary samples to be produced soon as part of the learning process. 9 S. Leith, 22. 05. 2021
Ngiyabonga! Thank You! EASITrain – European Advanced Superconductivity Innovation and Training. This Marie Sklodowska-Curie Action (MSCA) Innovative Training Networks (ITN) has received funding from the European Union’s H 2020 Framework Programme under Grant Agreement no. 764879