E.H. Sujiono, J. Agus, S. Samnur, K. Triyana
The effects of molar ratios and sintering times on crystal structures and surface morphology on NdFeO3 oxide alloy have been studied. NdFeO3 oxide alloy formed by chemical preparation with solid reaction method using raw oxide Fe2O3 (99.9 %) and Nd2O3 (99.9 %) powders. In this article we reported the effects of molar ratios x = (-0.1, -0.2 and -0.3) and sintering times for 15 h and 20 h on crystal structures and surface morphology of Nd1+xFeO3 synthesized by solid-state reaction method. The results indicate that variation of molar ratio and sintering time has influenced the FWHM, crystalline size and grain size. The Nd1+xFeO3 have a major phase is NdFeO3, and other minor phases are Fe2O3, Nd2O3 and Nd(OH)3. The dominant intensity of hkl (121) with a value in FWHM, crystallite size, and grain size an indication the results will be applied as a gas sensor material as the focus of the further study. © Published under licence by IOP Publishing Ltd.
Laboratory of Materials Physics, Department of Physics, Universitas Negeri Makassar, Parang Tambung Campus, Makassar, 90224, Indonesia; Department of Physics, Universitas Gadjah Mada, Sekip Utara BLS 21, Yogyakarta, 55281, Indonesia
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