Room temperature magnetoresistance in a polyimide-Co granular film synthesized by vapor deposition polymerization

Kazuya Z. Suzuki, Hideto Yanagihara, Tomohiko Niizeki, Ken Kojio, Eiji Kita

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

抄録

Magnetic and magnetotransport properties of pyromellitic dianhydride-4,4′-oxydianiline polyimide-Co granular thin films prepared by vapor deposition polymerization are investigated. The prepared sample is composed of Co particles with diameters of 2-3 nm homogeneously dispersed in a denatured polyimide matrix. The temperature dependence of the resistivity closely follows the T - 1 / 2 law, suggesting that the dominant conduction mechanism is tunneling between metallic granules embedded in the insulating polyimide matrix. The magnetoresistances at 300 and 90 K are 2.6 and 3.0, respectively. The results indicate that polyimide is a promising material for organic spintronics.

元の言語英語
記事番号222401
ジャーナルApplied Physics Letters
101
発行部数22
DOI
出版物ステータス出版済み - 11 26 2012
外部発表Yes

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polyimides
polymerization
vapor deposition
room temperature
matrices
magnetic properties
conduction
temperature dependence
electrical resistivity
thin films

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

これを引用

Room temperature magnetoresistance in a polyimide-Co granular film synthesized by vapor deposition polymerization. / Suzuki, Kazuya Z.; Yanagihara, Hideto; Niizeki, Tomohiko; Kojio, Ken; Kita, Eiji.

:: Applied Physics Letters, 巻 101, 番号 22, 222401, 26.11.2012.

研究成果: ジャーナルへの寄稿記事

Suzuki, Kazuya Z. ; Yanagihara, Hideto ; Niizeki, Tomohiko ; Kojio, Ken ; Kita, Eiji. / Room temperature magnetoresistance in a polyimide-Co granular film synthesized by vapor deposition polymerization. :: Applied Physics Letters. 2012 ; 巻 101, 番号 22.
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AU - Kita, Eiji

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