NURUL ANNISA KUMALAHARDIYANI, . (2015) SINTESIS DAN KARAKTERISASI MATERIAL BARIUM HEKSAFERIT BaFe12-x(CoTi0.5Mn0.5)x/2O19 SEBAGAI APLIKASI PENYERAPAN GELOMBANG MIKRO. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Pada penelitian ini telah disintesis material magnet Barium Heksaferit (BaFe12O19) dengan substitusi Co, Ti, dan Mn terhadap Fe. Material tersubstitusi BaFe12- x(CoTi0.5Mn0.5)x/2O19 dengan variasi nilai x = 0, 1, 2, dan 3 didapatkan setelah melewati proses milling menggunakan high energy ball mill selama 1 jam, kalsinasi pada temperatur 750 ̊C selama 3 jam dan sintering pada 1100 ̊C selama 3 jam. Hasil karakterisasi dengan sinar-x menunjukkan bahwa pola difraksi yang dihasilkan sama dengan pola difraksi BaFe12O19, yang berarti bahwa proses substitusi telah berhasil. Pada pengujian sifat kemagnetan, terjadi penurunan nilai koersivitas intrinsik dari 235.947 kA/m (x = 0) menjadi 12.6445 kA/m (x = 3) dan nilai magnetisasi remanen relatif tetap. Hasil pengujian ini menunjukkan bahwa material magnet BaFe12-x(CoTi0.5Mn0.5)x/2O19 sangat berpeluang untuk diaplikasikan sebagai penyerap gelombang mikro. ***** In this study, the magnetic material has been synthesized Barium hexaferrite BaFe12O19 with Co, Ti, and Mn subtitution to Fe. Substituted materials BaFe12- x(CoTi0.5Mn0.5)x/2O19 with a variation of x = 0, 1, 2, and 3 is obtained after mixed through the milling proccess using high energy ball mill for an hour. Calcination at 750°C for 3 hours and sintering at 1100°C for 3 hours. The result X-Ray characterization show that produce diffraction pattern similar to the diffraction pattern of BaFe12O19 which means that the proccess of the substitution has been done. In magnetic properties testing, a reduction in the value of the intrinsic coercivity of 235,94 kA/m (x = 0) becomes 12,64 kA/m (x = 3) and remanent magnetization values are relatively fixed. The results indicate that the magnetic material BaFe12-x(CoTi0.5Mn0.5)x/2O19 is good to be applied as an absorber of microwaves.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Additional Information: | 1). Dr. Erfan Handoko, M.Si. ; 2). Riser Fahdiran, M.Si. |
| Subjects: | Sains > Fisika |
| Divisions: | FMIPA > S1 Fisika |
| Depositing User: | Users 14614 not found. |
| Date Deposited: | 31 May 2022 05:45 |
| Last Modified: | 31 May 2022 05:45 |
| URI: | http://repository.unj.ac.id/id/eprint/29442 |
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