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Journal > Jurnal Sains Materi Indonesia > PHASE ANALYSIS AND MAGNETIC PROPERTIES OF BaFe12O19/Nd2Fe14B COMPOSITE BY MECHANICAL MILLING PRODUCT

 

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Jurnal Sains Materi Indonesia
Vol 13, No 2 (2012): Februari 2012
PHASE ANALYSIS AND MAGNETIC PROPERTIES OF BaFe12O19/Nd2Fe14B COMPOSITE BY MECHANICAL MILLING PRODUCT
Sardjono, Prijo ( Pusat Penelitian Fisika (P2F)-LIPI Jl. Sangkuriang 154/D, Cisitu, Bandung 40132)
Adi, Wisnu Ari ( Pusat Teknologi Bahan Industri Nuklir (PTBIN)-BATAN Kawasan Puspiptek Serpong 15314, Tangerang)
Sebayang, Perdamaian ( Pusat Penelitian Fisika (P2F)-LIPI Jl. Sangkuriang 154/D, Cisitu, Bandung 40132)
., Muljadi ( Pusat Penelitian Fisika (P2F)-LIPI Jl. Sangkuriang 154/D, Cisitu, Bandung 40132)
Article Info   ABSTRACT
Published date:
20 Nov 2013
 
The synthesis and characterization of BaFe12O19/Nd2Fe14B composite by use mechanical milling has been performed. The result of refinement of X-ray diffractions showed that the sample consist of two phases namely BaFe12O19 and Nd2Fe14B phase with fraction mass were 79.89 and 20.11 wt%, respectively. The BaFe12O19 system magnetic materials have been formed with the crystal structure of hexagonal (space group P 63/m m c), lattice parameter are a = 5.9033(5) Å, b = 5. 9033(5) Å and c = 23.239(2) Å, α = β = 90o and γ = 120o, V = 701.3(1) Å3 and ρ = 5.7172 g.cm-3. The Nd2Fe14B system magnetic materials have been formed with the crystal structure of tetragonal (space group P 42/m n m), lattice parameter are a = 8.865(8) Å, b = 8.865(8) Å and c = 12.269(1) Å, α = β = γ = 90o, V = 964.3(1) Å3 and ρ = 7.7508 g.cm-3. The magnetic properties result of Nd2Fe14B shown that the sample has the coercive field and remanence magnetization are 7984 Oe and 5250 Gauss, respectively. The BaFe12O19 are 1625 Oe and 1190 Gauss, respectively. And the BaFe12O19- Nd2Fe14B composite increase to become 2650 Oe and 1580 Gauss, respectively. We conclude that the process of mixing between BaFe12O19 and Nd2Fe14B is not affect the change of each phase. The BaFe12O19 particle can be use as the shielding of the Nd2Fe14B particle from it’s the corrosion properties. The BaFe12O19 magnetic material has a stable structure at room temperature, so that this structure was not easy of change after mix with the Nd2Fe14B particles.Keywords: BaFe12O19/Nd2Fe14B, Mechanical milling, Crystal structure, Magnetic properties.
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