Tunnel magnetoresistance in Co nanoparticle/Co-C60 compound hybrid system

Seiji Sakai, Kay Yakushiji, Seiji Mitani, Koki Takanashi, Hiroshi Naramoto, Pavel V. Avramov, Kazumasa Narumi, Vasily Lavrentiev, Yoshihito Maeda

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

A nanometer-scale hybrid film of Co particle/Co-C60 compound was prepared by alternate deposition of Co and C60 under UHV condition. All of Raman spectra, magnetization curves, and tunnel conductivity concluded that the hybrid system has a granular structure consisting of Co nanoparticles embedded in a Co-C60 compound matrix. The magnetoresistance ratio of 26% was obtained at 2 K and 10 kOe for the electron tunneling across the Co-C 60 compound barrier. In addition, anomalously large bias voltage dependence was found in the magnetotransport properties.

Original languageEnglish
Article number113118
JournalApplied Physics Letters
Volume89
Issue number11
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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