International Journal of Applied Engineering Research
  • Year: 2009
  • Volume: 4
  • Issue: 12

Preparation and Magnetic Properties of Ni-Zn Magnetic Fluid

  • Author:
  • K. Velmurugan1, V.S.K. Venkatachalapathy2, S. Sendhilnathan3
  • Total Page Count: 7
  • Page Number: 2539 to 2545

1Sri Chandra Sekharendra Saraswathi ViswaMahaVidyalaya University, Kanchipuram - 631561, India.

2Sri Manakula Vinayagar Engineering College, Pondicherry - 605 107, India.

3Department of Physics, Anna University Tiruchirappalli - Pattukkottai Campus, Thanjavur Dist. – 614 701, Tamil Nadu, India.

Abstract

Ni1-xZnxFe2O4 (with x varying from 0 to 0.7) nano particles to be used for ferrofluid preparation were prepared by chemical co-precipitation method. The fine particles were suitably dispersed in transformer oil using oleic acid as the surfactant. The magnetization (MS) and the size of the particles were measured at room temperature. The magnetization (MS) was found to decrease with the increase in zinc substitution. The magnetic particle size (Dm) of the fluid was found to vary from 8.85 – 7.11nm decreasing with the increase in zinc substitution. The results of FTIR spectra for ferrofluid indicate the presence of the adsorbed water molecules and Me-O vibrations.

Keywords

co-precipitation, ferrofluid, ferrite