Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-30T18:15:59.912Z Has data issue: false hasContentIssue false
  • English
  • Français

Electrical conductivity and magnetic properties of core-shell silver-coated magnetite composite nanoparticles

Published online by Cambridge University Press:  21 May 2012

Jianguo Liu  and
Xiaoyan Zeng
Jianguo Liu*
Affiliation:
Wuhan National Laboratory for Optoelectronics, College of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Xiaoyan Zeng
Affiliation:
Wuhan National Laboratory for Optoelectronics, College of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
*
a)Address all correspondence to this author. e-mail: ljg712@yahoo.com.cn
Get access

Abstract

Electrical conductivity and magnetic properties of core-shell silver-coated magnetite composite nanoparticles prepared by electroless deposition of silver on magnetite nanopowder are found to be affected mainly by the pressure used when preparing the nanoparticles sample cylinder and the Ag content in the nanoparticles. The electrical conductivity can be enhanced by increases of both the pressure and the Ag content. Direct current volume electrical resistivity of the nanoparticles with 40 wt% silver content is close to the order of 10−4 Ω cm when the pressure is larger than 1 × 106 Pa. The saturation magnetization of the nanoparticles almost reduces linearly with increasing the silver content. According to the rule of mixtures, the resistivity of the nanoparticles is calculated. But it shows that the calculated values have a large deviation with the corresponding measured ones. As a comparison, resistivity and saturation magnetization of the mixtures consisting of silver and magnetite nanopowder are also measured. It will be an effective method to adjust the electromagnetic properties of the nanoparticles by changing the silver content.

Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 14 , 28 July 2012 , pp. 1853 - 1858
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Teja, A.S. and Koh, P.Y.: Synthesis, properties, and applications of magnetic iron oxide nanoparticles. Prog. Cryst. Growth Charact. Mater. 55, 22 (2009).CrossRefGoogle Scholar
2.Chang, M.T., Chou, L.J., Hsieh, C.H., Chueh, Y.L., Wang, Z.L., Murakami, Y., and Shindo, D.: Magnetic and electrical characterizations of half-metallic Fe3O4 nanowires. Adv. Mater. 19, 2290 (2007).CrossRefGoogle Scholar
3.Hsu, J.H., Chen, S.Y., Chang, W.M., and Chang, C.R.: Temperature dependence of magnetoresistance effect in Ag-Fe3O4 composites films. J. Magn. Magn. Mater. 1772, 272 (2004).Google Scholar
4.Zheng, Y.H., Cheng, Y., Bao, F., and Wang, Y.S.: Synthesis and magnetic properties of Fe3O4 nanoparticles. Mater. Res. Bull. 41, 525 (2006).CrossRefGoogle Scholar
5.Hostetler, M.J., Wingate, J.E., Zhong, C.J., Harris, J.E., Vachet, R.W., Clark, M., Londono, J., Green, S.J., Stokes, J.J., Wignall, G.D., Glish, G.L., Porter, M.D., Evans, N.D., and Murray, R.W.: Alkanethiolate gold cluster molecules with core diameters from 1.5 to 5.2 nm: Core and monolayer properties as a function of core size. Langmuir 14, 17 (1998).CrossRefGoogle Scholar
6.Jiang, H.G., Moon, K.S., and Li, Y.: Surface-functionalized silver nanoparticles for ultrahigh conductive polymer composites. Chem. Mater. 18, 2969 (2006).CrossRefGoogle Scholar
7.Jiang, H.J., Moon, K.S., Lu, J.X., and Wong, C.P.: Conductivity enhancement of nano silver-filled conductive adhesives by particle surface functionalization. J. Electron. Mater. 34, 1432 (2005).CrossRefGoogle Scholar
8.Lee, K.J., Jun, B.H., Choi, J., Lee, Y.I., Joung, J., and Oh, Y.S.: Environmentally friendly synthesis of organic-soluble silver nanoparticles for printed electronics. Nanotechnol. 18, 335601 (2007).CrossRefGoogle Scholar
9.Li, G.J., Huang, X.X., and Guo, J.K.: Fabrication of Ni-coated Al2O3 powders by the heterogeneous precipitation method. Mater. Res. Bull. 36, 1307 (2001).CrossRefGoogle Scholar
10.Puclin, T. and Kaczmarek, W.A.: Synthesis of alumina-nitride nanocomposites by successive reduction-nitridation in mechanochemically activated reactions. J. Alloys Compd. 266, 283 (1998).CrossRefGoogle Scholar
11.Wen, G.W., Guo, Z.X., and Davies, C.K.L.: Microstructural characterization of electroless nickel coatings on zirconia powder. Scr. Mater. 43, 307 (2000).CrossRefGoogle Scholar
12.Hwang, H.J., Toriyama, M., Sekino, T., and Niihara, K.: In situ fabrication of ceramic/metal nanocomposites by reduction reaction in barium titanate–metal oxide systems. J. Eur. Ceram. Soc. 18, 2193 (1998).CrossRefGoogle Scholar
13.Shi, W.X., Yang, J., Wang, T.J., and Jin, Y.: Surface organic modification of magnetic iron black particles. Acta Phys. Chim. Sin. 17, 507 (2001). (in Chinese).Google Scholar
14.Kobayashi, Y., Salgueirino-Maceira, V., and Liz-Marzan, L.M.: Deposition of silver nanoparticles on silicon spheres by pretreatment steps in electroless plating. Chem. Mater. 13, 1630 (2001).CrossRefGoogle Scholar
15.Ten Kortenaar, M.V., De Goeij, J.J.M., Kolar, Z.I., Frens, G., Lusse, P.J., Zuiddam, M.R., and Van Der Drift, E.: Electroless silver deposition in 100 nm silicon structures. J. Electrochem. Soc. 148, C28 (2001).CrossRefGoogle Scholar
16.Chang, H., Pitt, C.H., and Alexander, G.B.: Electroless silver plating of oxide particles in aqueous solution. J. Mater. Sci. 28, 5207 (1993).CrossRefGoogle Scholar
17.Chang, S.Y., Lin, J.H., Lin, S.J., and Kattamis, T.Z.: Processing copper and silver matrix composites by electroless plating and hot pressing. Metall. Mater. Trans. A 30, 1119 (1999).CrossRefGoogle Scholar
18.Zhang, Q.X., Yang, L.N., Zhang, J.M., Guan, J.G., and Wang, Y.L.: Preparation of magnetic core-shell Fe3O4/Ag nanoparticles and its properties. J. Chin. Ceram. Soc. 35, 987 (2007).Google Scholar
19.Cao, X.G. and Zhang, H.Y.: Preparation and performance of Ag coated Fe3O4 composite powder. Funct. Mater. 38, 1655 (2007). (in Chinese).Google Scholar
20.Tang, D.P., Yuan, R., and Chai, Y.Q.: Magnetic core-shell Fe3O4@Ag nanoparticles-coated carbon paste interface for studies of carcinoembryonic antigen in clinical immunoassay. J. Phys. Chem. B 110, 11640 (2006).CrossRefGoogle ScholarPubMed
21.Guo, X.Y., Wang, Y.N., Gu, L.G., He, Y.F., Zhang, C.X., Tang, Z.M., and Lu, Z.H.: Synthesis property characterization of core-shell Co@SiO2 magnetic nanoparticles and its biomedical applications to cell separation and cell chip. Chem. J. Chin. Univ. 27, 1725 (2006). (in Chinese).Google Scholar
22.Brandow, S.L., Chen, M.S., and Wang, T.: Size-controlled colloidal Pd (II) catalysts for electroless Ni deposition in nanolithography applications. J. Electrochem. Soc. 144, 3425 (1997).CrossRefGoogle Scholar
23.Mclachlan, D.S., Blaszkiewicz, M., and Newnham, R.E.: Electrical resistivity of composites. J. Am. Ceram. Soc. 73,2187 (1990).CrossRefGoogle Scholar