Room temperature positive magnetoresistance via charge trapping in polyaniline-iron oxide nanoparticle composites
Room temperature positive magnetoresistance via charge trapping in polyaniline-iron oxide nanoparticle composites
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DOI：
10.1063/1.4815998
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发表时间：
2013-07
影响因子：
4
通讯作者：
Aigu L. Lin;Tom Wu;Wei Chen;A. Wee
中科院分区：
文献类型：
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作者：
Aigu L. Lin;Tom Wu;Wei Chen;A. Wee
我们展示了聚苯胺-氧化铁纳米颗粒（PANI-NP）有机杂化复合材料器件，室温正磁电阻为85.7%。温度相关的电阻率测量将此观察归因于在存在外部磁场的情况下电荷载流子的局部化长度的减小，这导致它们被捕获在绝缘PANI层之间的器件内，因此允许器件即使在电源关闭时也保持其电阻状态，从而表现出记忆效应。
We demonstrate a polyaniline-iron oxide nanoparticle (PANI-NP) organic hybrid composite device with room temperature positive magnetoresistance of 85.7%. Temperature dependent resistivity measurements attribute this observation to the decrease in localization length of the charge carriers in the presence of an external magnetic field which result in them being trapped within the device between the insulating PANI layer, hence allowing the device to maintain its resistive state even when the power is switched off, thus exhibiting a memory effect.