Synthesis of magnetite octahedrons from iron powders through a mild hydrothermal method

Journal Article · Wed Dec 13 23:00:00 EST 2006 · Materials Research Bulletin

OSTI ID:20895197

Baodong, Mao ^[1]; Zhenhui, Kang ^[1]; Enbo, Wang ^[1]; Suoyuan, Lian ^[1]; Lei, Gao ^[1]; Chungui, Tian ^[1]; Chunlei, Wang ^[1]

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1. Institute of Polyoxometalate Chemistry, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024 (China)

Magnetite (Fe{sub 3}O{sub 4}) octahedral particles were fabricated from iron powders through a simple one-step alkali-assisted hydrothermal process. The crystallinity, morphology, and structural features of the as-prepared magnetite particles were investigated using powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The values of saturation magnetization (M {sub s}) and coercivity (H) of the magnetite octahedrons characterized on a vibrating sample magnetometer (VSM) are 89.81 emu/g and 70.6 Oe, respectively. The concentration of NaOH and the reaction temperature played a key role in the formation of the magnetite octahedrons.

• OSTI ID: 20895197
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 12 Vol. 41; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL PREPARATION
COERCIVE FORCE
FERRITES
IRON
IRON OXIDES
MAGNETIC PROPERTIES
MAGNETITE
MAGNETIZATION
MORPHOLOGY
NANOSTRUCTURES
POWDERS
SCANNING ELECTRON MICROSCOPY
SODIUM HYDROXIDES
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION