THE EFFECT OF VARIATION OF THE BISMUTH CONTENT ON THE MAGNETIC PROPERTIES OF Y3-XBiXFe5O12 SYSTEM

 

Noorhana Yahya1,2, Imad Hamadneh1, Mansor Hashim1,2  and Chang Mei Mei1

 

1Department of Physics, Faculty of Science

Universiti Putra Malaysia,

43400 UPM Serdang, Selangor

 2Advanced Materials Laboratory, Institute of Advanced Technology,

Universiti Putra Malaysia,

43400 UPM Serdang, Selangor

 

noorhana@fsas.upm.edu.my

 

 

ABSTRACT

 

Y3.0-xBixFe5O12 samples were prepared via conventional technique. Four samples of Y3.0-xBixFe5O12  were prepared (x = 0.2, 0.4, 0.6, 0.8). The samples were then studied for general variation of Curie temperature and initial permeability with bismuth content. All the compounds prepared were identified by X-Ray Diffraction. Sample with the highest content of bismuth, sample Y2.2Bi0.8Fe5O12 , recorded the highest Curie temperature and the highest initial permeability. The bismuth  is speculated to give rise to the  strong super-exchange interaction and this results in the increase of Curie temperature.  Additionally, the bismuth content works as a sintering aid to assist grain growth during sintering  and hence enhances the initial permeability.  

 

 

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