Patterning polymer metal precursor for high temperature superconductor films

Lampe, I. von; Schmalstieg, A.; Götze, S.; Müller, Johannes; Zygalsky, F.; Lorkowski, H.‐J.; Matalla, Mathias

doi:10.1023/a:1018524111864

Cited by 14 publications

(1 citation statement)

References 8 publications

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“…Different types of polymers are used for preparing HTSC materials: PMAA [473][474][475], PAN [476,477], polyimides [478,479]. poly(N,N-dicarboxymethyl) allylamine [480,481], copolymers of acrylic acid [482,483] etc.…”

Section: Metal Thiolates and Sulfides In The Polymer Matrixmentioning

confidence: 99%

Nanostructured Materials Preparation via Condensation Ways

Pomogailo

Джардималиева

2014

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Section: Metal Thiolates and Sulfides In The Polymer Matrixmentioning

confidence: 99%

Nanostructured Materials Preparation via Condensation Ways

Pomogailo

Джардималиева

2014

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Complex formation and degradation in poly(acrylonitrile‐co‐vinyl acetate) containing copper nitrate

Silverstein

Najary

Grader

et al. 2004

J Polym Sci B Polym Phys

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The pyrolysis of polymers containing metal nitrates may provide a relatively simple, rapid, and advantageous method of producing high‐temperature superconductors (HTSCs). The advantage lies in the ability to use conventional polymer processing or microlithographic patterning before pyrolysis. A copolymer of acrylonitrile and vinyl acetate [P(AN‐VA)], a well‐known fiber‐forming polymer, was investigated as a potential HTSC precursor. Complex formation with the highly polar acrylonitrile groups was expected to enhance atomic‐level mixing and hinder nitrate recrystallization. The metal nitrates were found to have a profound effect on P(AN‐VA) pyrolysis. P(AN‐VA) containing copper nitrate (CuN) exhibited complex formation and an exothermic decomposition that began at about 170 °C (reaction 1‐CuN). Reaction 1‐CuN had a heat of about 3.5 kJ/gNO3 and a mass loss of about 0.99 g/gNO3. As reaction 1‐CuN also involved the nitrile groups, it disrupted the nitrile cyclization reaction at about 290 °C. For a P(AN‐VA)/CuN ratio of 2/1, there was no nitrile cyclization, and the thermooxidative degradation temperature was reduced by approximately 200 °C. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 1023–1032, 2004

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Thermal degradation of poly(acrylic acid) containing metal nitrates and the formation of YBa₂Cu₃O_7−x

Dubinsky

Lumelsky

Grader

et al. 2005

J Polym Sci B Polym Phys

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The use of polymers containing metal salts as ceramic high‐temperature superconductor (HTSC) precursors may provide a relatively simple and rapid method for producing materials that can take advantage of advanced polymer processing and then be pyrolyzed to HTSCs. The mechanisms of thermal degradation in these precursors, which have not been characterized, can be used to optimize the pyrolysis conditions for HTSC production. This article describes the degradation of a precursor based on poly(acrylic acid) (PAAc) containing yttrium, barium, and copper nitrates in the proportions needed for the formation of the HTSC YBa2Cu3O7−x (YBCO). This article also describes the effects of the pyrolysis process on the resulting materials. The degradation of the precursor is a complex, multistage process. The presence of the metal ions and HNO3 reduces the thermal stability of PAAc and increases the degradation rate. The results indicate that the initial stages of the pyrolysis should be conducted in argon or nitrogen to inhibit BaCO3 formation and that the final stages should be conducted in air/oxygen to enhance oxidation. Optimization of the pyrolysis conditions produces a YBCO film with minimal contamination. © 2005 Wiley Periodicals, Inc. J PolymSci Part B: Polym Phys 43: 1168–1176, 2005

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Patterning polymer metal precursor for high temperature superconductor films

Cited by 14 publications

References 8 publications

Nanostructured Materials Preparation via Condensation Ways

Nanostructured Materials Preparation via Condensation Ways

Complex formation and degradation in poly(acrylonitrile‐co‐vinyl acetate) containing copper nitrate

Thermal degradation of poly(acrylic acid) containing metal nitrates and the formation of YBa₂Cu₃O_7−x

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Patterning polymer metal precursor for high temperature superconductor films

Cited by 14 publications

References 8 publications

Nanostructured Materials Preparation via Condensation Ways

Nanostructured Materials Preparation via Condensation Ways

Complex formation and degradation in poly(acrylonitrile‐co‐vinyl acetate) containing copper nitrate

Thermal degradation of poly(acrylic acid) containing metal nitrates and the formation of YBa2Cu3O7−x

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Product

Resources

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Thermal degradation of poly(acrylic acid) containing metal nitrates and the formation of YBa₂Cu₃O_7−x