Superconducting Thin Films Made by Chemical Solution Deposition

Synthesis and thermal decomposition study of dysprosium trifluoroacetate

“…Dysprosium trifluoroacetate, Dy(CF3COO)3, was synthesized from dysprosium acetate tetrahydrate, Dy(CH3COO)3•4H2O, supplied by Alfa Aesar 99.9% purity-metal basis (MB), following a procedure similar to that applied for the preparation of DyBa2Cu3O7-δ precursor solutions [1]. The same MB purity is expected for the synthesized Dy(CF3COO)3, since no other metallic cations have been involved in the process.…”

“…Trifluoroacetate (TFA) precursors are being widely used for the manufacture of high performance hightemperature superconducting (HTS) coated conductors and thin film, processed through the chemical solution decomposition (CSD) method [1]- [7]. The manufacture of HTS coated conductors beneficiates from a prior knowledge of the (metal) TFA thermal decomposition mechanism, by allowing the determination and optimization of the involved pyrolysis and reaction processes.…”

“…The thermal behavior of Dy(TFA), which is used as a precursor in the preparation of DyBa2Cu3O7- superconducting thin films and coated conductors [1] still deserves additional studies. In particular, the exact nature of the gas species released during the decomposition process is not clear, because the use of static air, as used in [12], results in combustion of organic materials.…”