Rare earth ion contribution in barium hexaferrite structure to a change of magnetocrystalline anisotropy to improving its magnetic properties

I Gusti Agung Putra Adnyana; I Ketut Sukarasa; Wisnu Ari Adi

doi:10.29332/ijpse.v4n2.433

Authors

I Gusti Agung Putra Adnyana
igaadnyana@unud.ac.id
Physics Study Program, Faculty of Mathematics and Natural Sciences, Udayana University, Badung, Bali, Indonesia
I Ketut Sukarasa Physics Study Program, Faculty of Mathematics and Natural Sciences, Udayana University, Badung, Bali, Indonesia
Wisnu Ari Adi Centre for Science and Technology of Advanced Materials, BATAN, Puspiptek Serpong, South Tangerang, Indonesia

Keywords:

barium hexaferrite, coercivity, magnetic, rare earth, structure

Abstract

Rare earth ion contribution in barium hexaferrite structure to a change of magneto-crystalline anisotropy to improving its magnetic properties has been investigated. A series of simples of Ba_1-xCe_xFe₁₂O₁₉with the variation of x (x = 0.0-0.5) were prepared by solid-state reactions using mechanical deformation techniques. The oxide materials used for sample preparation are BaCO₃, Fe₂O₃, and CeO₂ with the ratio of material used is adjusted to the stoichiometric calculation for variations of Ce⁴⁺ substitution. The phase identification results show that the reaction took place perfectly and successfully formed a single-phase Ba_1-xCe_xFe₁₂O₁₉ namely at the composition x = 0 and x = 0.1. while for the composition x> 0.1, it is formed in three phases. Particle morphology in the composition x = 0 and x = 0.1 has very good and uniform particle homogeneity across the surface of the sample in the form of polygonal particles. So the substitution of Ce atoms into the barium hexaferrite structure is only able at the composition limit x = 0.1. In the composition x = 0.1 has been able to increase the coercivity and magnetization fields. It can be concluded that the permanent magnet with the composition Ba_0,9Ce_0.1F₁₂O₁₉ gives the best results.

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