Sunaryono, Muchlis Fajar Hidayat, Chusnana Insjaf Yogihati, Ahmad Taufiq, Nandang Mufti, Retno Rahmawati
Polyvinyl Alcohol-based Ferrogels embedded with ferrofluids were successfully fabricated through the freezing-thawing process. Fe3O4 nanoparticles were synthesized from iron sand using co-precipitation method with particles average size of 12 nm obtained from XRD data analysis and coincided with the morphology analysis using TEM. Furthermore, magnetic properties of ferrogels measured by VSM showed that the saturation magnetization of the ferrogels with TMAH composition of 1.4 mL was the highest. It indicated that the ferrogel with TMAH composition of 1.4 mL was the maximum composition to stabilize the ferrofluid. Additionally, a high the ferrofluid percentage in the ferrogels, the threshold magnetic field reduced. © 2019 Elsevier Ltd. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jalan Semarang No 5, Malang, 65145, Indonesia; Research Center of Minerals and Advanced Materials, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5 Malang, 65145, Indonesia; Departement of Physics, Faculty of Sains and Technology, UIN Sunan Kalijaga, Yogyakarta, 55281, Indonesia
