Open AccessSintesis Nanopartikel Cobalt Ferrite (CoFe2O4) dengan Metode Kopresipitasi dan Karakterisasi Sifat Kemagnetannya
Author(s) -
Eko Arief Setiadi,
Nanda Shabrina,
Hesti Retno Budi Utami,
Nur Fadhilah Fahmi,
Takeshi Kato,
S. Iwata,
Edi Suharyadi
Publication year - 2016
Publication title -
indonesian journal of applied physics
Language(s) - English
Resource type - Journals
eISSN - 2477-6416
pISSN - 2089-0133
DOI - 10.13057/ijap.v3i01.1216
Subject(s) - crystallinity , span (engineering) , materials science , grain size , ferrite (magnet) , analytical chemistry (journal) , nuclear chemistry , chemistry , metallurgy , composite material , chromatography , civil engineering , engineering
Magnetic nanoparticles of cobalt ferrite (CoFe 2 O 4 ) have been synthesized by co-precipitation method with various synthesis temperature and concentration of NaOH. The structural characteristics and particle size of CoFe 2 O 4 were determined by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM), its showed that nanoparticles well crystallized with various grain size which depend on synthesis parameters. The grain sizes estimated using the Scherrer formula were found that the grain size increased with increasing temperature synthesis and decreasing concentration of NaOH. Magnetic characterization of CoFe 2 O 4 nanoparticles was investigated by using a Vibrating Sample Magnetometer (VSM). Sample with various concentration of NaOH showed that coercivity was decrease with the decrease of particle size. In other hand, samples with various synthesis temperature found that sample with smallest grain size have high coersivity. The saturation magnetization increase when crystallinity increase. Based on the results, it can be concluded that magnetic characterization of CoFe 2 O 4 was influenced by grain size and crystallinity.