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首页> 外文期刊>Crystallography reports >Specific features of phase transitions and the conduction of La2Mo2O9 oxide-ion conducting compound doped with vanadium
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Specific features of phase transitions and the conduction of La2Mo2O9 oxide-ion conducting compound doped with vanadium

机译：钒掺杂的La2Mo2O9氧化物离子导电化合物的相变和导电特性

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The X-ray powder analysis, calorimetric studies, and conductivity measurements of a series of ceramic La2Mo2-x V (x) O (y) specimens with different vanadium content are performed with the aim of following the dynamics of phase formation of the low-temperature alpha, high-temperature beta, and metastable beta (ms) phases. At x a parts per thousand yen 0.06, the cubic phase becomes stable and the monoclinic phase vanishes; therefore, the main alpha -> beta transition is suppressed. According to the data of differential thermal analyses, a weak thermal anomaly is observed in the range 450-470A degrees C at x a parts per thousand yen 0.06. This anomaly is indicative of the beta (ms) -> beta transition due to the conversion of the cubic phase with statically disordered oxygen atoms into the cubic phase with dynamic disorder. The conductivity of the high-temperature beta phase obeys the Vogel-Tammann-Fulcher law.
机译：进行X射线粉末分析，量热研究和一系列具有不同钒含量的La2Mo2-x V（x）O（y）陶瓷样品的电导率测量，其目的是跟踪低合金的相形成动力学。温度α，高温β和亚稳态β（ms）相。 x a千分之一为0.06时，立方相变得稳定，单斜晶相消失。因此，主要的alpha-> ​​beta过渡被抑制了。根据差热分析的数据，在x a千分之几0.06的情况下，在450-470A℃范围内观察到微弱的热异常。该异常指示由于静态无序的氧原子的立方相转变为动态无序的立方相而导致的β（ms）->β跃迁。高温β相的电导率符合Vogel-Tammann-Fulcher定律。

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