Journal
SCRIPTA MATERIALIA
Volume 116, Issue -, Pages 36-39Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.01.037
Keywords
Czochralski technique; High-temperature superconductors; Crystallization; Metastable phases; Polythermal
Categories
Funding
- MOST of China [2012CB821404]
- NSFC [51172143, 51572171]
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To overcome demerits of the low production efficiency in the prior art isothermal method (constant supercooling) of Top-Seeded Solution-Growth (TSSG), we applied the polythermal method (increasing supercooling), and a large YBa2Cu3O7 (- delta) single crystal with a dimension of a x b x c = 13.8 x 13.5 x 12.3 mm was obtained via a cooling rate of 0.5 K/h, gaining a growth rate nearly 2 times faster than that by constant supercooling. The optimal growth mode was proposed for more REBa2Cu3O7 (-) (delta) (RE = Sm, Nd) materials basing on their characteristics of solubility curves. 2016 Elsevier Ltd. All rights reserved.
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