Controlled synthesis and magnetic properties of iron oxide nanostructures using biogenic polyamines

Sangaraju Shanmugam*, Takuya Nakanishi, Tetsuya Osaka

*この研究の対応する著者

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

A facile and simple approach has been described for the synthesis of magnetite nanoparticles and iron oxyhydroxide nanorods using biogenic polyamines. At room temperature, highly crystalline magnetite particles with average size of 44 ± 2 and 37 ± 1 nm were synthesized with spermine and spermidine, respectively. The formation of nanoparticles was characterized with TEM, HRTEM, XPS and SQUID. The magnetite nanoparticles formed by the biogenic polyamines exhibits ferrimagnetic behavior at 300 K. When the reaction was carried out at low temperature, high aspect ratio, well crystalline nanorods were observed. X-ray diffraction and Infrared spectroscopy suggests that the nanorods correspond to lepidocrocite (γ-FeOOH). TEM analysis shows each bundle consisting of several nanorods stacked together by side on fashion. γ-FeOOH nanorods with high aspect ratio of 70 were observed. The SQUID analysis reveals that the lepidocrocite nanorods exhibit superparamagnetic behavior at room temperature.

本文言語English
ホスト出版物のタイトルECS Transactions - Magnetic Materials, Processes and Devices 10 - 214th ECS Meeting
ページ189-197
ページ数9
45
DOI
出版ステータスPublished - 2009 11 23
イベントMagnetic Materials, Processes and Devices 10 - 214th ECS Meeting - Honolulu, HI, United States
継続期間: 2008 10 122008 10 17

出版物シリーズ

名前ECS Transactions
番号45
16
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Conference

ConferenceMagnetic Materials, Processes and Devices 10 - 214th ECS Meeting
国/地域United States
CityHonolulu, HI
Period08/10/1208/10/17

ASJC Scopus subject areas

  • 工学(全般)

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