Room temperature positive magnetoresistance via charge trapping in polyaniline-iron oxide nanoparticle composites

Aigu L. Lin; Tom Wu; Wei Chen; Andrew T.S. Wee

doi:10.1063/1.4815998

Room temperature positive magnetoresistance via charge trapping in polyaniline-iron oxide nanoparticle composites

Aigu L. Lin, Tom Wu, Wei Chen, Andrew T.S. Wee^*

^*Corresponding author for this work

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

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.

Original language	English (US)
Article number	032408
Journal	Applied Physics Letters
Volume	103
Issue number	3
DOIs	https://doi.org/10.1063/1.4815998
State	Published - Jul 15 2013

Bibliographical note

Funding Information:
This work was supported by the MOE ARF Grant No. R-398-000-056-112.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4815998

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title = "Room temperature positive magnetoresistance via charge trapping in polyaniline-iron oxide nanoparticle composites",

abstract = "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.",

author = "Lin, {Aigu L.} and Tom Wu and Wei Chen and Wee, {Andrew T.S.}",

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AU - Lin, Aigu L.

AU - Wu, Tom

AU - Chen, Wei

AU - Wee, Andrew T.S.

N1 - Funding Information: This work was supported by the MOE ARF Grant No. R-398-000-056-112.

PY - 2013/7/15

Y1 - 2013/7/15

N2 - 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.

AB - 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.

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DO - 10.1063/1.4815998

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JF - Applied Physics Letters

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Room temperature positive magnetoresistance via charge trapping in polyaniline-iron oxide nanoparticle composites

Abstract

Bibliographical note

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