Synthesis and properties of La2(Mo1-xMx)2O9 (M = Nb, Ta) ionic conductors

被引：45
作者：
Khadasheva, ZS
Venskovskii, NU
Safronenko, MG
Mosunov, AV
Politova, ED
Stefanovich, SY
机构：
[1] Patrice Lumumba Peoples Friendship Univ, Moscow 117198, Russia
[2] LY Karpov Phys Chem Res Inst, Russian State Sci Ctr, Moscow 103064, Russia
来源：
INORGANIC MATERIALS | 2002年 / 38卷 / 11期
关键词：
D O I：
10.1023/A:1020978902757
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
La-2(Mo1-xMx)(2)O-9 (M = Nb, Ta; 0 < x less than or equal to 0.2) solid solutions were prepared, and their physicochemical and electrical properties were studied. Second harmonic generation measurements indicate that the solid solutions have a noncentrosymmetric structure and undergo a structural phase transition accompanied by a sharp increase in ionic conductivity, similar to that of La2Mo2O9. The transition temperature is found to decrease with increasing Nb or Ta content. The introduction of 5 wt % Nb increases the 800degreesC conductivity of the material.
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页码：1168 / 1171
页数：4
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