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Takeshi Kato
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Astronomy Energy Materials Science & Nanotechnology Physics

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Sintesis Nanopartikel Cobalt Ferrite (CoFe2O4) dengan Metode Kopresipitasi dan Karakterisasi Sifat Kemagnetannya Eko Arief Setiadi; Nanda Shabrina; Hesti Retno Budi Utami; Nur Fadhilah Fahmi; Takeshi Kato; Satoshi Iwata; Edi Suharyadi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): IJAP VOLUME 03 ISSUE 01 YEAR 2013
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1216

Abstract

Magnetic nanoparticles of cobalt ferrite (CoFe2O4) have been synthesized by co-precipitation method with various synthesis temperature and concentration of NaOH. The structural characteristics and particle size of CoFe2O4 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 CoFe2O4 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 withsmallest grain size have high coersivity. The saturation magnetization increase when crystallinity increase. Based on the results, it can be concluded that magnetic characterization of CoFe2O4 was influenced by grain size and crystallinity.
Co-Authors Edi Suharyadi Eko Arief Setiadi Hesti Retno Budi Utami Nanda Shabrina Nur Fadhilah Fahmi Satoshi Iwata