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REVISTA DE CHIMIE
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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2012, Volume 63, Issue 1,





Carmen Dorina Aruxandei, Nicoleta Cornei, Cristina Amalia Hutanu, Cristina Elena Ciomaga, Petrisor Mugurel Samoila, Alexandra Raluca Iordan, Mircea Nicolae Palamaru
Sol-gel Synthesis and Characterization of LiMn2-xCuxO4 Spinels

Abstract:

The spinel samples LiMn2-xCuxO4 (x = 0.05, 0.10, 0.15, 0.20) were obtained by sol-gel method. The structure was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and infrared spectroscopy (FT-IR). The LiMn2-xCuxO4 have a cubic structure with the space group of Fd-3m symmetry in which lithium and manganese ions occupy tetrahedral (8a) sites and octahedral (16d) sites, respectively, within a cubic close-packed oxygen array with oxygen ions in (32e) sites. The electrical properties of the samples were investigated using impedance spectroscopy at room temperature. Complex impedance representation, Cole-Cole diagram, presents a single component which is demonstrating the electrical homogeneity of the samples. Keywords: spinel oxide, X-ray diffraction, electric properties

Issue: 2012, Volume 63, Issue 1
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