The effects of alloying elements on the microstructure and magnetic properties of co-precipitated ferrite

Authors

  • Eufrecina B. Bognalbal College of Engineering, University of the Philippines Diliman
  • Erwin Victor R. Cruz College of Engineering, University of the Philippines Diliman
  • Christina A. Petrache College of Engineering, University of the Philippines Diliman
  • Roland V. Sarmago National Institute of Physics, University of the Philippines Diliman

Abstract

Soft ferrites of composition Ni0.96-xZnxFe2.04O4 (x = 0, 0.24, 0.48, 0.72, 0.96) were prepared by co-precipitaton reaction of metal sulfates of Ni2+, Zn2+ and Fe2+ with NH4OH. The precipitates were filtered, dried at 300°C for 2 hours, and then calcined at 900°C for 5 hours. The calcined powders were pressed in a toroid mold measuring 25 mm o.d., 10 mm i.d. and 3 mm thick at a pressure of 17 tonnes for 1 min. The green bodies were sintered in air for 2 hours at 1100°C. The microstructures of the dried precipitates, calcined (green body) and sintered ferrites were examined using a JSM - 35 JEOL scanning electron microscope (SEM). The compounds formed were analyzed using Cu K-α radiation of a Shimatzu x-ray diffractometer (XRD). The magnetic properties such as permeability and resistivity were measured using the equipment available at the Philippine Nuclear Research Institute (PNRI).

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Article ID

SPP-1995-CM-07

Section

Condensed Matter Physics, Superconductivity and Materials Physics

Published

1995-10-21

How to Cite

[1]
EB Bognalbal, EVR Cruz, CA Petrache, and RV Sarmago, The effects of alloying elements on the microstructure and magnetic properties of co-precipitated ferrite, Proceedings of the Samahang Pisika ng Pilipinas 13, SPP-1995-CM-07 (1995). URL: https://proceedings.spp-online.org/article/view/SPP-1995-CM-07.