Optimization of YbBa.sub.2./sub.Cu.sub.3./sub.O.sub.y./sub. thick film formation on MgO substrates

0466337 - FZÚ 2017 RIV NL eng C - Conference Paper (international conference)
Kawata, S. - Muralidhar, M. - Jirsa, Miloš - Inoue, K. - Murakami, M.
Optimization of YbBa₂Cu₃O_y thick film formation on MgO substrates.
Physics Procedia, Vol. 81. Amsterdam: Elsevier, 2016 - (Tanabe, K.; Amemiya, N.), s. 33-36. ISSN 1875-3884.
[International Symposium on Superconductivity /28./. ISS 2015. Tokyo (JP), 16.11.2015-18.11.2015]
Institutional support: RVO:68378271
Keywords : YbBaCuO * quench experiments * double-step process * XRD * critical current density * SEM
Subject RIV: BM - Solid Matter Physics ; Magnetism

We optimized the formation process of the YbBa2Cu3Oy superconducting thick film prepared from the mixture of Yb2BaO4, BaCuO2, and CuO. Thick films of this composite were sintered at various temperatures between 800 oC and 1025 oC and held for 10 minutes in air, then rapidly quenched in liquid nitrogen. The samples were characterized by XRD, SEM, and magnetization measurements. The XRD analysis indicated that the Yb-123 phase started to form above 800 oC, with optimum at 825 oC. At even higher temperatures (900 oC and 975 oC) the secondary phase and liquid phase predominantly formed. Based on these results, we fabricated
good quality YbBa2Cu3Oy thick films on an MgO substrate utilizing a double step heating process.
Permanent Link: http://hdl.handle.net/11104/0264670