First time in-situ investigation of 2223 formation measured on (Bi,Pb)2Sr2Ca2Cu3O10+x thick films on Ag tape prepared by the screen printing technique |
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| Affiliation: | 1. Institute of Materials Science, Glass and Ceramics, Martensstr. 5, D-91058 ErlangenGermany;2. Siemens AG, Research Laboratories, Otto-Hahn-Ring 6, D-81739 MünchenGermany;3. Siemens AG, Research Laboratories, Paul-Gossen-Str. 100, D-91050 ErlangenGermany;4. Bergakademie Freiberg, Institute for Ceramic Materials, Gustav-Zeuner-Str. 3, D-09599 Freiberg, Germany;1. Institute of Metal Physics, Russian Academy of Sciences-Ural Division, 620990, Yekaterinburg, Russia;2. Elettra Sincrotrone Trieste SCpA, Area Science Park, S.S. 14 km 163.5, 34012, Basovizza, Italy;1. Univ Paris Est Créteil, CNRS, ICMPE, UMR 7182, 2 rue Henri Dunant, F-94320 Thiais, France;2. Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, 3000 Sfax, Tunisia;3. Capgemini Engineering, Direction Research & Innovation Department, 2 rue Paul Dautier, 78140, Vélizy-VillaCoublay, France;1. School of Material Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan;2. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600 036, India;3. Computational Engineering Applications Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan;4. Research Center for Advanced Computing Infrastructure, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan;5. Center for Materials Research by Information Integration, Research and Services Division of Materials Data and Integrated System, National Institute for Materials Science, Tsukuba 305-0047, Japan;6. PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan;7. School of Information Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan;1. MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China;2. State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, PR China;1. Department of Materials Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan;2. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan;3. Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan;4. Department of Physics, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan |
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| Abstract: | Detailed investigations were performed on the reaction kinetics of the superconducting BPSCCO 2223 phase in order to be able to improve tape processing and critical current density Jc of 2223 layers on Ag tape made by the organic binder method. The Jc values presently vary between 6–12 × 103A/cm2 (77 K, O T). To our knowledge, it is the first time that the formation of the 2223 has directly been observed employing in-situ high temperature X-ray diffraction (HTXRD). This measurement was carried out on screen printed samples of BPSCCO on Ag foil heated in a specially designed closed crucible preventing the evaporation of lead. The main findings are that the 2223 phase arises from the 2212 phase at 820–835°C within a short timescale of about 2–3 h. These results were correlated with measurements on a Simultaneous Thermal Analysis (STA) showing endothermic reactions which indicate the starting of partial melting at about 825–836°C. According to the literature we found that the reaction kinetics are controlled by diffusion processes under the presence of partial melt. |
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