%0 Thesis %9 Skripsi %A SRI SUSANTI, NIM. 07620006 %B FAKULTAS SAINS DAN TEKNOLOGI %D 2014 %F digilib:14353 %I UIN SUNAN KALIJAGA %K Keyword : Magnetite Nanoparticles, Temperature On The Function, The Crystal Structure %T KAJIAN STRUKTUR KRISTAL NANOPARTIKEL MAGNETITE (Fe3O4) SEBAGAI FUNGSI TEMPERATUR DARI HASIL SINTESIS DENGAN MENGGUNAKAN METODE SONOKIMIA %U https://digilib.uin-suka.ac.id/id/eprint/14353/ %X This study aims to obtain nano-sized magnetite nanoparticles and study the effect of temperature on the function of the crystal structure of magnetite nanoparticles. Synthesis is done by mixing natural sand with HCl as solvent and NaOH as a precipitant ultrasonic. Function of temperature was varied from 30⁰ C, 50⁰ C, and 80⁰ C and seen its effect on the cubic crystal structure formed from the sample. Sample test results magnetite nanoparticles were characterized by using XRD (XRay Difraction) to determine the phase formation and the size of the crystals formed and SEM (Scanning Electron Microscope) to determine the morphology of the sample. From the results of the characterization of unknown fraction of the sample volume decreases due to the appearance of another phase in the form (α- Fe2O3), in addition to the sample of magnetite nanoparticles have a face-centered cubic structure (Face Centered Cubic) with the crystal fields in accordance with the standard crystal field JCPDS (Joint Committee of Powder standart) no.19-629 with the size of crystals at temperatures 30⁰ C of (22.62 ± 1.56) nm, at a temperature of 50⁰ C (24.30 ± 1.20) nm, and the temperature of 80⁰ C (20 , 60 ± 0.60) nm. The results showed that the sonochemical method with a function of temperature can reduce the size of magnetite nanoparticles and no effect on the crystal structure of magnetite nanoparticles. %Z Pembimbing : Retno Rahmawati, M.Si