%0 Journal Article
%T A STUDY OF MgF2 AS A DIFFUSION SOURCE FOR Mg-ION INDIFFUSION LITHIUM NIOBATE SINGLE CRYSTAL<br>MgF2作为镁离子内扩散LiNbO3单晶扩散源的研究
%A QUE WEN-XIU
%A YAO XI
%A <br>阙文修
%A 姚熹
%J 物理学报
%D 1996
%I 
%X A study of the Mg-ion indiffusion of lithium niobate single crystal substrate is made by MgF2 as a diffusion source. By means of electron probe microanalysis, the Mg-ion concentra tion of the Mg diffused layer is obtained, which is approximately a half parabolic and step profiles. The activation energy of Mg-ion indiffusion is 104 kJ/mol. It is found by X-ray diffraction analysis that in the Mg diffused layer LiNb3O8 compound appears with Mg-ion in diffusion beyond a certain extent. The appearance of LiNb3O8 compound is related to the Li ion outdiffusion from the bulk of lithium niobate and existence of a great deal of F-ion at the diffused surface. It is observed by scanning electron microscopy that the F-ion is in the form of LiF and LiF will go away from the surface of the Mg diffused layer with increasing of Mg ion indiffusion degree.
%K 二氟化镁
%K 内扩散
%K 铌酸锂
%K 单晶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=7411BF4698E83734B36A1442C85F3BE1&yid=8A15F8B0AA0E5323&vid=94E7F66E6C42FA23&iid=CA4FD0336C81A37A&sid=E203FB1A272C9DD2&eid=117F81797AB182FC&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=2