%A LIANG Yue, LU Da-yong
%T Study on the Site Occupations of Tm3+ Ions in BaTiO3 Dielectric Ceramics
%0 Journal Article
%D 2018
%J Journal of Jilin Institute of Chemical Technology
%R 10.16039/j.cnki.cn22-1249.2018.01.011
%P 44-46
%V 35
%N 1
%U {https://xuebao.jlict.edu.cn/CN/abstract/article_34.shtml}
%8 2018-01-25
%X The site occupations of Tm3+ ions in the BaTiO3 lattice has always been a controversial problem．For
ceramics prepared according to the nominal formula ( Ba1－x Tmx ) Ti1－x/4 O3 ( BTmT) and Ba ( Ti1－x Tmx ) O3
( BTTm) ， X-ray diffraction ( XRD) and electron paramagnetic resonance ( EPR) techniques were used to
identify the site occupations of Tm3+ ions in the BaTiO3 lattice．The results indicated that the position of Tm3+ in
BaTiO3 lattice is related to Ba /Ti ratio．In the case of Ba /Ti＞1， Tm3+ ions are basically insoluble in BaTiO3
lattice．When Ba /Ti＜1，the solubility limit of Tm3+ ions at the Ba-sites in BTmT ceramics is x = 0．02，and these
ceramics exhibited a tetragonal perovskite structure． a conclusion can be drawn by comparing the volume of
crystal packages that Tm3+ ions showed the amphoteric behavior that occupied Ba sites and Ti sites．