Effect of substitution of manganese for iron on the structure and electrical properties of yttrium ferrite
Effect of substitution of manganese for iron on the structure and electrical properties of yttrium ferrite
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DOI：
10.1111/j.1151-2916.2001.tb00827.x
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发表时间：
2004-12
影响因子：
3.9
通讯作者：
Xueqian Cao;Chan-soo Kim;H. Yoo
中科院分区：
文献类型：
--
作者：
Xueqian Cao;Chan-soo Kim;H. Yoo
锰在YFe1−yMnyO3中的溶解度达到y= 0.4。其中，YFe0.6Mn0.4O3的电导率最高，ς= 2.16 Ω−1·cm−1（1000℃，空气），比钇铁氧体YFeO3 （ς= 0.10 Ω−1·cm−1,1000℃，空气）高出bb0.1个数量级。在0.2≤y≤0.4范围内，电导率与锰含量成线性关系。提出了极化子在锰位点（y≥0.2）间的直接输运机制来解释锰掺杂样品的电学行为。利用x射线衍射和红外光谱对样品进行了结构表征。
The solubility of manganese in YFe1−yMnyO3 reaches y= 0.4. Among these compositions, YFe0.6Mn0.4O3 has the highest conductivity with ς= 2.16 Ω−1·cm−1 (1000°C, air), which is >1 order of magnitude higher than that of yttrium ferrite, YFeO3 (ς= 0.10 Ω−1·cm−1, 1000°C, air). In the range 0.2 ≤y≤ 0.4, the conductivity is linearly proportional to the manganese content. The mechanism of direct transport of polarons among manganese sites (y≥ 0.2) is proposed to explain the electrical behavior of manganese-doped samples. X-ray diffractometry and infrared spectroscopy have been applied for the structural characterization of the samples.