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首页> 外文期刊>Crystallography reports >Synthesis and electrical properties of Aurivillius phases in the Bi2MoO6-Bi2VO5.5 system
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Synthesis and electrical properties of Aurivillius phases in the Bi2MoO6-Bi2VO5.5 system

机译：Bi2MoO6-Bi2VO5.5体系中Aurivillius相的合成和电性能

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摘要

To search for new oxygen conductive phases, a series of Bi2V1 ? x MoxO5.5 + x/2 ceramic samples have been synthesized in which the extreme compositions Bi2VO5.5 (x = 0) and Bi2MoO6 (x = 1) are single-layer Aurivillius phases having ferroelectric properties and high ionic oxide conductivity. It is established that single-layer Aurivillius phases exist in the composition ranges 0 ≤ x ≤ 0.1 and 0.9 ≤ x ≤ 1. Additional phases with BiVO4 and Bi6Mo2O15 structures are found in the range 0.2 ≤ x ≤ 0.8. The presence of molybdenum stabilizes the orthorhombic β-Bi2VO5.5 phase at room temperature. The conductivity of solid solutions based on Bi2VO5.5 differs only slightly from that of pure bismuth vanadate. Conductivity of solid solutions based on Bi2MoO6 is half an order of magnitude higher than that of pure bismuth molybdate.
机译：为了寻找新的氧传导相，需要一系列Bi2V1？已合成了x MoxO5.5 + x / 2陶瓷样品，其中极端组成Bi2VO5.5（x = 0）和Bi2MoO6（x = 1）是具有铁电性能和高离子氧化物电导率的单层Aurivillius相。已确定，单层Aurivillius相存在于0≤x≤0.1和0.9≤x≤1的范围内。发现具有BiVO4和Bi6Mo2O15结构的其他相的范围为0.2≤x≤0.8。钼的存在在室温下稳定了正交晶的β-Bi2VO5.5相。基于Bi2VO5.5的固溶体的电导率与纯钒酸铋的电导率仅略有不同。基于Bi2MoO6的固溶体的电导率比纯钼酸铋的电导率高半个数量级。

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