Abstract
A precursor of Y-Ba-Cu oxides was prepared by a modified alkoxide sol-gel method and its thermal decomposition in air was studied by on-line coupled TG-FTIR and High Resolution Thermogravimetric measurements. A continuous more or less stepwise weight loss was observed between room temperature and 600°C at which all organic compounds had evolved and were progressively oxidized as the temperature increased leaving only Y and Cu oxides and bariumcarbonate. Between 700 and 800°C a final weight loss was observed due to the decomposition of bariumcarbonate into oxide.
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The authors wish to thank Mrs. Martine Vanhamel for her technical assistance. In particular, thanks are expressed to TA Instruments for giving the possibility to use the High Resolution thermal analyser. M. K. Van Bael is an aspirant of the Belgian National Fund for Scientific Research N.F.W.O.
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Van Bael, M.K., Mullens, J., Nouwen, R. et al. Thermal treatment of a modified alkoxide gel precursor for the preparation of the YBa2Cu4O8 superconductor. Journal of Thermal Analysis 48, 989–996 (1997). https://doi.org/10.1007/BF01979148
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DOI: https://doi.org/10.1007/BF01979148