Efek High Energy Milling terhadap Koersivitas Magnet Intrinsik BaO.6Fe2O3  

Oleh:

Ridwan ; Adi, Wisnu Ari ; Mujamilah ; Johan, Akmal

Jenis: Article from Journal - ilmiah nasional - tidak terakreditasi DIKTI
Dalam koleksi: Jurnal Sains Materi Indonesia vol. 7 no. 1 (2005), page 37.
Topik: magnetic coersivity; high energy milling; barrium hexaferrite

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ112.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

High energy milling effect on intrinsic magnetic coersivity of BaO.6Fe2O3. The magnetic properties of BaO.6Fe2O3 fine powder milled by high-energy milling followed through annealing on 400, 600, 800, 1000, and 1100 Celcius Degree have been studied. The decreasing of magnetic properties for 30 hours milled samples is due ti the deformation of crystalline materials. Annealing process of milled powders under 800 Celcius Degree for 3 hours could not recover the ohase system completely. After annealing temperature was increased to 1000 Celcius Degree the BaO.6Fe2o3 gas been growth with the intrinsic coersivity increased to the Hei = 4.4 kOe, comparing to the powder magnet before milling that the Hei only 1.7 kOe. these coersivity enhancement was closed related to the particles sizes which are ver finer compare to the particles size of unmilling powder. At annealing temperature 1100 Celcius Degree, show that intrinsic coersivity decreased again to the Hei = 3.7 kOe, it may due to the crystal growth.

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