Author:
Xiang Hui,Wang Wei,Li Hao-Chen,Cui Xiang-Xiang,Fan Wen-Shuo,Guo Lin-Shan,Yao Xin,Zou Zhi-Qiang,Xiong Jie
Abstract
High-quality and large YBa2Cu3O7−δ(YBCO or Y123) single crystals are necessary for both fundamental studies and practical applications. The recently exploited modified melt growth (MMG) procedure realizes a high efficiency of growth and high purity of Y123. However, it was unexpectedly found that the thermal stability of the NdBa2Cu3O7−δ(Nd123) film seed applied in MMG is greatly reduced owing to a change in the liquid property. In order to solve this problem, a new top-seeding mode, buried seeding, is developed to strengthen the film thermal stability, leading to a remarkable enhancement of endurable maximum processing temperature of over 30 K in low supersaturation. Furthermore, the correlation of the thermal stability of the film seed in melt growth with the liquid property and top-seeding modes is clarified. Most importantly, the buried-seeding mode was successfully applied in this work, opening a promising pathway for the effective growth of single crystals of other REBCO (RE = Nd, Sm, Gd) oxides (possessing a higher peritectic temperature than YBCO), as well as other functional oxides.
Publisher
International Union of Crystallography (IUCr)
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
12 articles.
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