Preparation and Properties of Fe3O4 Magnetic Nano-particles

Journal of Inorganic Materials

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Preparation and Properties of Fe₃O₄ Magnetic Nano-particles

LI Peng^1,2; HOU Yi-Dong¹; LI Dan-Zhen¹; ZHANG An²; FU Xian-Zhi¹

1. Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350002; China; 2. Affiliated Middle School of Fujian Normal University; Fuzhou 350007; China

Received:2002-06-10 Revised:2002-08-12 Published:2003-07-20 Online:2003-07-20

Abstract

Abstract: The Fe₃O₄ magnetic nano-articles prepared by the titration hydrolyzation method were studied with X-ray diffration(XRD), UV-Vis diffusive reflectance
spectrum(DRS), Magnetoresistance measurement and digital bridge LCR. The results show that the Fe₃O₄ magnetic particles have strong absorptions in the rang
from 250nm to 3000nm；the average diameter of the Fe₃O₄ nano-particles is about 18nm. The Fe₃O₄ granular film has obvious negative magnetoresistivity
effect and humidity sensitive character. The impedance of the Fe₃O₄ nano-particles decreases with increasing magnetic induction and humidity respectively.

Key words: titration hydrolyzation method, magnetoresistivity effect, nano-particles, humidity sensitive character

CLC Number:

O611
TB383

LI Peng,HOU Yi-Dong,LI Dan-Zhen,ZHANG An,FU Xian-Zhi. Preparation and Properties of Fe₃O₄ Magnetic Nano-particles[J]. Journal of Inorganic Materials.

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Preparation and Properties of Fe₃O₄ Magnetic Nano-particles

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