It is discovered that with the increasing of the ratio of CaF_2 to BaF_2 contents, glass forming region migrates from ZrF_4-rich area to AlF_3-rich area.

• 该系统玻璃形成区随CaF_2/BaF_2含量比的逐渐升高而由富ZrF_4区域向富AlF_3区域迁移。