TY - THES N1 - Pembimbing : Retno Rahmawati, M.Si ID - digilib14353 UR - https://digilib.uin-suka.ac.id/id/eprint/14353/ A1 - SRI SUSANTI, NIM. 07620006 Y1 - 2014/07/03/ N2 - 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 30? C, 50? C, and 80? 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 (?- 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 30? C of (22.62 ± 1.56) nm, at a temperature of 50? C (24.30 ± 1.20) nm, and the temperature of 80? 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. PB - UIN SUNAN KALIJAGA KW - Keyword : Magnetite Nanoparticles KW - Temperature On The Function KW - The Crystal Structure M1 - skripsi TI - KAJIAN STRUKTUR KRISTAL NANOPARTIKEL MAGNETITE (Fe3O4) SEBAGAI FUNGSI TEMPERATUR DARI HASIL SINTESIS DENGAN MENGGUNAKAN METODE SONOKIMIA AV - restricted ER -