Karakterisasi Struktur Kristal dan Sifat Magnetik Maghemit (γ-Fe2O3) yang Dioksidasi dari Magnetit (Fe3O4 ) dari Pasir Besi Batang Sukam Kabupaten Sijunjung Sumatera Barat dengan Variasi Waktu Oksidasi

Authors

  • Sisri Wahyu Nengsi Jurusan fisika, FMIPA, Universitas Andalas
  • Arif Budiman Jurusan fisika, FMIPA, Universitas Andalas
  • Dwi Puryanti Jurusan fisika, FMIPA, Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.5.3.248-251.2016

Abstract

Telah dilakukan penelitian tentang karakterisasi struktur kristal dan sifat maghemit hasil oksidasi magnetit (Fe3O4) pasir besi dengan waktu oksidasiyang bervariasi. Pasir besi yang digunakan berasal dari Batang Sukam Kabupaten Sijunjung Sumatera Barat. Oksidasi dilakukan pada iffraction 400°C dengan variasi waktu oksidasi 1 jam, 5 jam, 10 jam, dan 15 jam. Karakterisasi struktur kristal sampel dilakukan dengan metoda X-Rays Difraction (XRD). Nilai suseptibilitas sampel diukur dengan alat Bartington Susceptibility Meter.  Hasil penelitian menunjukkan bahwa mineral iffract pasir besi Batang Sukam didominasi oleh magnetit. Hasil oksidasi magnetit pasir besi adalah  maghemit dan iffract, tetapi maghemit yang mendominasi. Maghemit hasil oksidasi magnetit dengan waktu oksidasi yang bervariasi memiliki nilai suseptibilitas yang iffra sama. Nilai suseptibilitas maghemit hasil oksidasi tersebut  adalah 9437,5×10-8 m3/kg sampai 10030,7 ×10-8 m3/kg.

Kata kunci : magnetit, maghemit, XRD dan suseptibilitas.

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Published

2016-07-03

Issue

Vol. 5 No. 3 (2016)

Section

Articles

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Copyright (c) 2016 Sisri Wahyu Nengsi, Arif Budiman, Dwi Puryanti

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