通过结构解析, 建立了ABO3型钛铁矿的容差因子计算公式以评估结构的稳定性, 经过分析具有钛铁矿结构的MgTiO3、NiTiO3、CoTiO3、ZnTiO3以及(Zn1-x, Mx )TiO3(M为Mg、Ni、Co)复合钛铁矿的稳定性, 验证了容差因子公式的合理性; 通过对已发现的具ABO3型钛铁矿结构的化合物的统计分析, 提出形成稳定钛铁矿结构的经验容差因子范围和经验电负性差值, 即: t>0.80, e>1.465.
The tolerance factor of ABO3-type ilmenite by analyzing the ABO3 ilmenite crystal structure is established, and combining with the electronegativity difference, regularities governing the formation and the stability of ilmenite-type compounds are discussed. The tolerance factor equation is proved appropriate for ilmenite structure by analyzing the structure stability of some ilmenite compounds, such as MgTiO3, NiTiO3, CoTiO3, ZnTiO3 and (Zn1-x, Mx)TiO3 (M denote Mg, Ni, Co). According to the results of statistical analyzing the tolerance factor and electronegativity difference of the present ABO3-type ilmenite, the
experience tolerance factor value and experience electronegativity difference value to form stable ilmenite compound are obtained, that is, t>0.80 and e>1.465.
参考文献
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