Open AccessChange of Structure and Magnetic Properties of La-Substituted Barium Hexaferrite
Author(s) -
Yana Taryana,
Azwar Manaf,
Wisnu Ari Adi
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1282/1/012045
Subject(s) - materials science , magnetocrystalline anisotropy , scanning electron microscope , crystal structure , lanthanum , barium , crystallography , lattice constant , particle size , analytical chemistry (journal) , magnetization , diffraction , magnetic anisotropy , chemistry , inorganic chemistry , metallurgy , magnetic field , composite material , physics , chromatography , quantum mechanics , optics
The substitution of Lanthanum into barium hexaferrite (Ba 1-x La x Fe 12 O 19 ) for La 3+ (x = 0, 0.2, 0.4, and 0.6) has been synthesized using the solid reaction method through mechanical milling. Refinement results from X-ray diffraction patterns (XRD) showed that the formation of hexagonal crystal structures with space group P63/mmc, where the lattice parameters of a = b and c decreased, while the lattice strain obtained increased with increasing La concentration in the sample. The single phase is obtained at the concentration of x = 0, while the concentration of x = 0.2, 0.4 and 0.6 are already multi-phase. The morphological observation of particles using a scanning electron microscope (SEM) shows that with the presence of the La 3+ substitution results the particle size distribution varies. Saturation magnetization and magnetocrystalline anisotropy are reduced due to this La substitution. This is thought to be caused by a decrease in magnetic (Fe-O-Fe) interaction and a reduction in the barium hexaferrite phase fraction in the sample. It was concluded that the effect of La substitution on Ba 1-x La x Fe 12 O 19 resulted in changes in Crystal structure parameters, particle size distribution, and magnetic properties of the material.