Nano-ilmenite FeTiO3: Synthesis and characterization

• Published in: Journal of magnetism and magnetic materials Vol. 331; pp. 129 - 132
• Main Authors: Raghavender, A.T., Hoa Hong, Nguyen, Joon Lee, Kyu, Jung, Myung-Hwa, Skoko, Z., Vasilevskiy, M., Cerqueira, M.F., Samantilleke, A.P.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2013; Elsevier
• Subjects: Chemical synthesis methods; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Ferromagnetism; Magnetic properties; Magnetism; Materials science; Methods of nanofabrication; Nano-Ilmenite; Nanocomposites; Nanocrystals and nanoparticles; Nanomaterials; Nanoparticles; Nanostructure; Optical; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Physics; Structural; Synthesis; Tasks; Nano-Ilmenite; Optical; Structural; Magnetic properties; Iron Titanates; Ilmenite structure; High temperature; Very high pressure; Nanoparticles; Energy gap; Weak ferromagnetism; Solid state reaction; Neel temperature; Wide band gap semiconductors; Absorption spectra; Sol-gel process; Nanomaterial synthesis
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2012.11.028

In general, ilmenite FeTiO3 is synthesized by solid-state reaction at very high pressure and high temperature. Synthesis of FeTiO3 is not an easy task as the Fe2+ ions are not stable. Therefore, it is really challenging to prepare this material. In this work nano-ilmenite FeTiO3 was synthesized by the sol–gel method. Structural, optical and magnetic characterizations were performed. The bandgap of FeTiO3 was determined to be 2.8eV showing FeTiO3 as suitable wide bandgap material for technological applications. The FeTiO3 nanoparticles exhibit weak ferromagnetic properties at and below room temperature. The Néel temperature was observed to be around 52K. ► Nano-ilmenite FeTiO3. ► Wide bandgap of 2.8eV suitable for technological applications. ► Phase formation analysis using Raman. ► Weak ferromagnetic properties at and below room temperature. ► Néel temperature was observed to be around 52K.