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研究了Li_(1+x)Ti_(2-x)Ga_xP_3O_(12)和Li_(1+2x)Ti_(2-x)Mg_xP_3O_(12)系统的组成、结构和电性的关系。在这两个系统中,Ga~(3+)和Mg~(2+)都能在一定的组成范围内取代LiTi_2P_3O_(12)中的Ti~(4+)形成固溶体,并使电导率提高。电导率极大值分别出现在x=0.6和x=0.3处,其在300℃左右的值为8.4×10~(-3)和5.3×10~(-3)s/cm。 比较了Ga~(3+)、Mg~(2+)和In~(3+)三种离子取代Ti~(4+)对电性的影响,并从结晶化学角度讨论了它们的差异。
The relationship between the composition, structure and electrical properties of Li_ (1 + x) Ti_ (2-x) Ga_xP_3O_ (12) and Li_ (1 + 2x) Ti_ (2-x) Mg_xP_3O_ (12) In both systems, Ga ~ (3+) and Mg ~ (2+) can replace Ti ~ (4+) in LiTi_2P_3O_ (12) to form solid solution within a certain range of composition and increase the electrical conductivity. The maxima of conductivity appear at x = 0.6 and x = 0.3, respectively, and the values of them are about 8.4 × 10 -3 and 5.3 × 10 -3 s / cm at about 300 ℃. The effects of substitution of Ti ~ (4+) ions on the electrical properties of Ga ~ (3 +), Mg ~ (2+) and In ~ (3+) ions were compared and their differences were discussed from the viewpoint of crystallization chemistry.