PENGARUH KOMPOSISI Co DAN Zn TERHADAP SUSEPTIBILITAS PADA NANOPARTIKEL MAGNETIK COBALT ZINC FERRITE (Co1-xZnxFe2O4)

CHARLIEN FEBRIANTY AYORBABA, Dr.Eng. Edi Suharyadi, M.Eng.

2021 | Skripsi | S1 FISIKA

Nanopartikel magnetik Co(1-x)Zn(x)Fe2O4 telah berhasil disintesis menggunakan metode kopresipitasi. Ukuran kristalit ditemukan menurun dari 10,3 hingga 9,8 nm dengan meningkatnya konsentrasi Zn. Pengukuran suseptibilitas nanopartikel magnetik Co(1-x)Zn(x)Fe2O4 dilakukan dengan metode Gouy dengan konsentrasi Zn 0,2; 0,4; 0,6; 0,8; 1,0. Berdasarkan hasil pengukuran, diperoleh nilai suseptibilitas berturut-turut (1,5 �± 0,2)10^(-2) m^3/kg, (2,3 �± 0,2)10^(-3) m^3/kg, (6,7 �± 0,7)10^(-4) m^3/kg, (9,3 �± 0,8)10^(-5) m^3/kg, (1,8 �± 0,1)10^(-5) m^3/kg. Hasil penelitian menunjukkan bahwa konsentrasi Zn mempengaruhi nilai suseptibilitas Co(1-x)Zn(x)Fe2O4. Semakin besar konsentrasi Zn maka nilai suseptibilitas Co(1-x)Zn(x)Fe2O4 semakin kecil.

Cobalt Zinc Ferrite (Co(1-x)Zn(x)Fe2O4) magnetic nanoparticles has been successfully synthesized using coprecipitation method. The crystallite size of nanoparticles was found decreased from 10,3 to 9,8 nm by increasing Zn concentration. Susceptibility of (Co(1-x)Zn(x)Fe2O4) magnetic nanoparticles have been analyzed using Gouy method with Zn concentration 0,2; 0,4; 0,6; 0,8; 1,0. The result of susceptibility on value of x concentration are (1,5 �± 0,2)10^(-2) m^3/kg, (2,3 �± 0,2)10^(-3) m^3/kg, (6,7 �± 0,7)10^(-4) m^3/kg, (9,3 �± 0,8)10^(-5) m^3/kg, (1,8 �± 0,1)10^(-5) m^3/kg. The susceptibility value of Co(1-x)Zn(x)Fe2O4, are effected by Zn concentration. The increasing by Zn concentration which has been given, make the value of susceptibility of Co(1-x)Zn(x)Fe2O4 became decrease.

Kata Kunci : nanopartikel magnetik Co(1-x)Zn(x)Fe2O4, kopresipitasi, konsentrasi Zn, suseptibilitas magnetik.