Crystal Structure Evolution of Magnetite Ferrofluids: Effect of Heating Treatment

Ahmad Taufiq*, Nurul Hidayat, Rosy Eko Saputro, Sunaryono, Hendra Susanto

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


This work aimed at investigating the crystal evolution, crystallite phase, morphology, and particle size of the magnetite ferrofluids as the effects of heating temperature. The iron sand was used to prepare magnetite ferrofluids by employing a simple chemical method. The high-resolution transmission microscopy characterization presented that the particle size and morphology were expanded from small to bigger size in nanometric size with aggregation. The electron and X-ray diffractions patterns exhibited that the magnetite particles in the fluids evolved from Fe3O4 (cubic structure) structure to α-Fe2O3 (rhombohedral structure) as the effect of heating treatment. At a temperature of 500 °C, the magnetite particles had a mixed crystallite phases consisting of α-Fe2O3 and Fe3O4 structures. Interestingly, at the temperature of 600 °C or higher, the magnetite particles in the fluids changed to the pure α-Fe2O3 structure. Such evolution phenomenon gives significant information in designing new sophisticated application of the magnetite ferrofluids, especially for the temperature sensor.

Original languageEnglish
Article number012004
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 2019
Externally publishedYes
EventInternational Conference on Condensed Matters and Advanced Materials 2018, IC2MAM 2018 - Malang, Indonesia
Duration: 5 Sept 2018 → …


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