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Title
Japanese: 
English:Advanced processing and characterization of SrTiO3 single crystals and bicrystals for high-Tc superconducting film substrate 
Author
Japanese: 高橋 和浩, 大友 明, 川崎 雅司, 鯉沼 秀臣.  
English: K. Takahashi, A. Ohtomo, M. Kawasaki, H. Koinuma.  
Language English 
Journal/Book name
Japanese: 
English:Materials Science and Engineering B-Solid State Materials for Advanced Technology 
Volume, Number, Page Vol. 41    No. 1    pp. 152-156
Published date Oct. 1996 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://www.sciencedirect.com/science/article/pii/S0921510796016431
 
DOI https://doi.org/10.1016/S0921-5107(96)01643-1
Abstract The preparation of single crystals and bicrystals of SrTiO3 and their surface treatment have been investigated to facilitate their application to the substrates of high-rr, superconducting thin films and devices. Bicrystals with different inter-crossing angles were used to elucidate the weak-link characteristics of grain boundary junctions formed in the epitaxial YBa2Cu3O7-delta films on the bicrystal substrates. Wet etching by pH-controlled ammonium fluoride solutions enabled us to finish SrTiO3 surfaces with atomically defined step-and-terrace structures, Atomically controlled two-dimensional layer-by-layer epitaxial growth was achieved by laser molecular beam epitaxy of oxide films on this atomically regulated surface.

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