%0 Journal Article
%T SIMS STUDY OF OXYGEN SPIRAL DIFFUSION C-TEXTURED Yba2Cu3O7-δ/SrTiO3 EPITAXIAL THIN FILM
%A 蔡震
%A 金学军
%J 中国物理 B
%D 1998
%I 
%X Secondary ion mass spectroscopy was used to study the chemical diffusivity of 018 in c-textured YBa2Cu3O7-δ/SrTiO3 epitaxial thin film. By fitting experimental data to the one- dimensional diffusion curve, the apparent diffusivity along the c-axis was obtained to be equal to l.02×1014cm2/sec when the temperature was 350℃. A computer analysis method was put forward to calculate the "spiral diffusion" process, and the diffusivity anisotopy of films with different mosaic size obtained. For a film of 7000×7000?2 mosaic size, Dab was found to be ～3.55×10-5xexp((-1.03 ev)/kT) cm2/sec. The calculated results reveal that the variation of the results of Dc is not the result of diffusivity anisotropy but of the difference in mosaic size.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=D82A87E34FD1A91FE8381244E38F89E2&yid=8CAA3A429E3EA654&vid=DF92D298D3FF1E6E&iid=59906B3B2830C2C5&sid=F434A3C2A19884E7&eid=C45B504FED793340&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0