TY - GEN
T1 - Controlled synthesis and magnetic properties of iron oxide nanostructures using biogenic polyamines
AU - Shanmugam, Sangaraju
AU - Nakanishi, Takuya
AU - Osaka, Tetsuya
PY - 2009/11/23
Y1 - 2009/11/23
N2 - 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.
AB - 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.
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U2 - 10.1149/1.3140021
DO - 10.1149/1.3140021
M3 - Conference contribution
AN - SCOPUS:70449633728
SN - 9781615673162
T3 - ECS Transactions
SP - 189
EP - 197
BT - ECS Transactions - Magnetic Materials, Processes and Devices 10 - 214th ECS Meeting
T2 - Magnetic Materials, Processes and Devices 10 - 214th ECS Meeting
Y2 - 12 October 2008 through 17 October 2008
ER -