Magnetic and magnetotransport properties in nanogranular Co/C 60-Co film with high magnetoresistance

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

研究成果: Article査読

7 被引用数 (Scopus)

抄録

Magnetic properties were investigated for the alternately deposited film of C60 and Co which has found to exhibit tunnel magnetoresistance (MR) of 10-80%. Magnetic field and temperature dependences of magnetization showed typical superparamagnetic behaviors with the blocking temperature of 40 K. The magnetization curve at 300 K was well fitted by the Langevin function with the size distribution of Co particles, and the mean diameter and size distribution were evaluated to be 3.1 nm and ∼1 nm, respectively. Based on the magnetic properties, the structure and magnetotransport properties are discussed in details.

本文言語English
ページ(範囲)754-758
ページ数5
ジャーナルMaterials Transactions
48
4
DOI
出版ステータスPublished - 2007 4

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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