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• W2499521566 abstract "Abstrak Nanopartikel Zinc Ferrite (ZnFe 2 O 4 ) telah disintesis dengan metode kopresipitasi. Nanopartikel disintesis dengan variasi konsentrasi NaOH 1,5 M; 3 M; dan 6 M dan suhu sintesis pada suhu ruang, 60 o C, dan 90 o C. Karakterisasi struktur kristal dan morfologi sampel menggunakan X-ray Diffraction (XRD) dan Transmission Electron Microscopy (TEM) menunjukkan bahwa sampel merupakan fasa ZnFe 2 O 4 berstruktur spinel campuran normal dan invers. Ukuran partikel dihitung dengan menggunakan persamaan Scherrer diperoleh bahwa ukuran partikel menurun dengan peningkatan konsentrasi NaOH dan menurunnya suhu sintesis. Ukuran partikel sampel dengan variasi konsentrasi NaOH yaitu 1,5 M; 3 M; dan 6 M berturut-turut adalah 8,4; 7,3 dan 5,6 sedangkan dengan variasi suhu sintesis yaitu pada suhu ruang, 60 o C dan 90 o C berturut-turut adalah 8,1; 8,4 dan 9,2 nm. Karakterisasi sifat magnetik menggunakan Vibrating Sample Magnetometer (VSM) menunjukkan bahwa sampel dengan variasi konsentrasi NaOH memiliki koersivitas meningkat dengan menurunnya ukuran partikel. Sementara sampel dengan variasi suhu, semakin tinggi ukuran partikel, koersivitasnya cenderung meningkat. Pada 15 kOe, ukuiran partikel 5,6 nm dengan rasio fasa α-Fe 2 O 3 terendah memiliki nilai magnetisasi tertinggi yaitu 16,510 emu/g dan koersivitas tertinggi yaitu 47,06 Oe. Dari hasil penelitian ini disimpulkan bahwa ukuran partikel dan kehadiran fasa α-Fe 2 O 3 mempengaruhi sifat kemagnetan nanopartikel ZnFe 2 O 4 . Kata kunci : nanopartikel, zink ferit (ZnFe 2 O 4 ), kopresipitasi. Abstract Zinc Ferrite Nanoparticles (ZnFe 2 O 4 ) have been synthesized by co-precipitation method. The nanoparticles were synthesized with various concentration of NaOH 1,5 M; 3 M and 6 M and synthesis temperature at room temperature, 60 o C and 90 o C. The characterization of the crystal structure and morphology of samples by using X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) showed that the samples were phase ZnFe 2 O 4 with mixture of normal and inverse spinel structures. The particle size estimated using the Scherrer formula were found that the particle size decrease with increasing of NaOH concentrations and decreasing of synthesis temperature. The particle size samples with various concentration of NaOH of 1.5; 3 and 6 M are 8.4; 7.3 and 5.6 nm respectively, whereas with various synthesis temperature of room temperature, 60 and 90 o C are 8.1; 8.4 and 9.2 nm, respectively. Characterization of magnetic properties by using Vibrating Sample Magnetometer (VSM) showed that the samples with various concentration of NaOH has a coercivity increases with decreasing particle size. Meanwhile for several of synthesis temperature, the increasing of particle size, than the coercivity tends to increase. At 15 kOe, the particle of size 5.6 nm with the lowest phase ratio of α-Fe 2 O 3 has the highest magnetization of 16.510 emu/g and the highest coercivity of 47.06 Oe. Based on the results it can be concluded that the particle size and the appearance of α-Fe 2 O 3 influence the magnetic properties of ZnFe 2 O 4 nanoparticle. Keywords: nanoparticles, zinc ferrite (ZnFe 2 O 4 ), co-precipitation." @default.
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• W2499521566 date "2015-12-30" @default.
• W2499521566 modified "2023-10-02" @default.
• W2499521566 title "SINTESIS NANOPARTIKEL ZINC FERRITE (ZnFe2O4) DENGAN METODE KOPRESIPITASI DAN KARAKTERISASI SIFAT KEMAGNETANNYA" @default.
• W2499521566 doi "https://doi.org/10.5281/zenodo.6322008" @default.
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