Synthesis and characterization of permanent magnetic oxide system Ba1-x-yLaxCeyFe12O19 system doped with La-Ce metal using wet mechanical milling method

I Gusti Agung Putra Adnyana; I Ketut Sukarasa; Komang Ngurah Suarbawa

doi:10.21744/ijcms.v4n1.1797

Authors

I Gusti Agung Putra Adnyana
igaadnyana@unud.ac.id
Program of Physics study, Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Indonesia
I Ketut Sukarasa Program of Physics study, Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Indonesia
Komang Ngurah Suarbawa Program of Physics study, Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Indonesia

Keywords:

Barium hexaferrite, crystal structure, mechanical milling, particle morphology, substitution of La and Ce

Abstract

The development of permanent magnet-based rare earth metals becomes a serious problem if the raw materials are difficult to find. The solution chosen is to utilize an oxide-based permanent magnet with little substitution of rare earth metals. In this study presented a permanent magnetic synthesis of barium hexaferrite-based oxides that were doped with La and Ce atoms. The synthesis of this material uses the wet mechanical milling technique to obtain the single phase permanent magnet system Ba_1-x-yLa_xCe_yFe₁₂O₁₉ (x = 0, 0.02, 0.04 and y = 0. 0.05, 0.1). The precursor is weighed according to stoichiometric composition and is milled for 5 hours then compressed at a pressure of 7000 Psi. Sintering temperature for the formation of the barium hexaferrite phase at 1200^oC for 2 hours. All samples after sintering were characterized using XRD and EDS. A single phase is obtained on all sample compositions with a hexagonal P63/mmc structure and is supported by elemental analysis data that each substituted sample contains elements La and Ce. Lattice parameters a, b, and c appear to decrease with increasing concentrations of La and Ce doping ions with a ratio of c/a in the range of 3.93-3.94.

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