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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >High dielectric constant in the charge-ordered manganese oxide CaMn7O12
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High dielectric constant in the charge-ordered manganese oxide CaMn7O12

机译:电荷有序氧化锰CaMn7O12中的高介电常数

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摘要

The dielectric properties of mixed-oxide CaMn7O12 are reported. This compound exhibits a high dielectric constant at room temperature (epsilon'(r) > 10(4)), for frequencies up to 10(4) Hz, values that make it very attractive for potential applications provided that its rather high losses can be minimized. Complex plane analysis of the obtained data reveal an important extrinsic contribution to these high epsilon'(r) values; and also that the intrinsic dielectric constant of this material is epsilon'(r,infinity) similar to 30, a value rather high for this type of compounds, that could be related to the electronic process of charge-ordering present in this oxide below 440 K.
机译:报道了混合氧化物CaMn7O12的介电性能。该化合物在室温下表现出高介电常数(epsilon'(r)> 10(4)),对于高达10(4)Hz的频率,只要其相当高的损耗可以使其对潜在的应用非常有吸引力。最小化。对获得的数据进行复杂的平面分析表明,外在的贡献对这些高ε值具有重要意义。并且该材料的本征介电常数是epsilon'(r,infinity)类似于30,对于这种类型的化合物而言,该值相当高,这可能与该氧化物中440以下的电荷有序电子过程有关K.

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