Open AccessEffects of post-annealing in different gas atmospheres on the properties of Tl-2212 films fabricated by sol-gel method
Author(s) -
Yanling Jiang,
Hongwei Yue,
Jinzhong Wei,
Mingxian Chen,
Xu Han,
Yanying Jin,
Pingying Tang,
Guohua Huang,
Xie Qing-lian
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/772/1/012078
Subject(s) - annealing (glass) , materials science , stoichiometry , critical current , superconductivity , sol gel , analytical chemistry (journal) , thin film , nanotechnology , composite material , condensed matter physics , chemistry , chromatography , physics
Tl-2212 superconducting thin films were fabricated on LaAlO 3 (00 l ) substrates by sol-gel method. In the process, the precursor films were annealed in various gas atmospheres. XRD and EDX testing results showed that the precursors annealed in O 2 converted into pure Tl-2212 superconducting phase, and the nominally stoichiometric cation ratio of TlBaCaCu was close to 2:2:1:2. The Tl-2212 film had a layered morphology and medium-quality superconductive parameters, which included the critical temperature T c of 105.5 K, and the critical current density J c of 0.8 MA/cm 2 (self-field, 77K).