Abstract
Doped tungstates exhibit superconductivity as indicated to occur mainly at the surface of the WO3 grains present. To generate bulk 3D superconducting material of doped tungstates, it is proposed to employ the recently discovered UV-generated synthesis of complex oxides from mixed simple oxides by illuminating the mixture with ultraviolet light at modest temperatures, as found in Shengelaya’s group in Tbilisi, and to generate a percolating 3D network of 2D superconducting sheets using the smallest basis oxides as the starting material. The latter procedure was demonstrated recently to be very effective in a collaboration with the present author (Daraselia et al., J. Appl. Phys. 121, 145104, 2017). If this proposition is successful, it would establish the doped tungstates as a second group of HTS besides the copper oxides that could be chosen for certain applications.
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Acknowledgements
The author is much indebted to Annette Bussmann-Holder for the information on the results as quoted in Refs. [1, 2, 11], and [12], and to Vladimir Kresin for the comments regarding Ref. [12]. Furthermore, Alexander Shengelaya transmitted me his new research program of 14.7.17. Charlotte Bolliger was substantial in the writing and editing of the present note.
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Müller, K.A. Generation of Bulk HTS with Doped Tungstates. J Supercond Nov Magn 30, 2707–2709 (2017). https://doi.org/10.1007/s10948-017-4297-9
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DOI: https://doi.org/10.1007/s10948-017-4297-9