Pengaruh Konsentrasi Doping Zn terhadap Simpangan dan Medan Magnet Ambang Ferogel Fe3-xZnxO4-PVA
Abstract
Ferogel berbahan dasar Fe3O4 (magnetit) dan hidrogel Polyvinyl Alcohol (PVA) telah berhasil disintesis dengan penambahan ion Zn2+ ke dalam partikel magnetit sehingga menjadi Fe3-xZnxO4 melalui proses freezing-thawing. Magnetit diperoleh dari pasir besi dengan metode sonokimia. Karakterisasi menggunakan Fourier Transform Infrared (FTIR) dilakukan untuk mengetahui gugus fungsi dari ferogel. Pengujian magneto-elastisitas juga dilakukan untuk mengetahui pengaruh konsentrasi doping terhadap respon magnetik ferogel yang diukur melalui besarnya nilai simpangan dan medan magnet ambang ferogel, diperoleh hasil bahwa semakin banyak doping maka akan menurunkan sifat elastisitas dan respon magnetik ferogel.
Kata Kunci: Fe3-xZnxO4-PVA, ferogel, sonokimia, freezing thawing, magneto-elastisitas.Full Text:
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 | Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Malang Website: www.fisika.fmipa.um.ac.id
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