,A Transition Phase in the Transformation from α-,β- and ε- to δ-Bismuth Oxide

• 作 者: DENG Hong-Yan HAO Wei-Chang XU Huai-Zhe
• 机 构: Department of Physics, Beihang University, Beijing 100191“,”Center of Materials Physics and Chemistr
• 出 处: 中国物理快报（英文版）
• 发表日期: 2011年5期

As an important functional material,Bi2 O3 is found in seven polymorphs.We systematically analyze the transformation from α-,β- and ε- to δ-Bi2 O3 by using crystallographic group theory and structural simulations.A transition phase is proved to exist in the transformation from the α-,β- and ε-Bi2 O3 to δ-Bi2 Os.The transition phase is supposed to be tetragonal phase Bi2O2.7(Z = 2) with the 139th I 4/m 2/m 2/m space group.