Browsing by Author "Shauo, CN"

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Isolation of magnetite nanoparticles by colloidal dispersant in aqueous solution
(2006-01-01)
Shauo, CN
;
Chao, CG
;
Cheng, MC
;
材料科學與工程學系
;
Department of Materials Science and Engineering
Nanometer-scale magnetite particles were prepared in a dispersant system with a dispersant at a very low concentration. The mean sizes of the particles prepared under optimum conditions were determined using transmission electron microscopy (TEM) to be approximately 3.8 nm. X-ray diffraction and electron diffiraction pattern showed that the particles' phase was consistent with magnetite. The magnetic characteristics were studied using a vibration sample magnetometer (VSM). The dried samples exhibited approximately superparamagnetic behavior.