Investigation of nanocrystalline zinc chromite obtained by two soft chemical routes

Eufemio Moreno Pineda, Dana Gingasu, Ioana Mindru, Daniela C. Culita, Luminita Patron, Jose Maria Calderon-Moreno, Silviu Preda, Ovidiu Oprea, Petre Osiceanu, Eufemio Morena Pineda

    Research output: Contribution to journalArticlepeer-review


    Zinc chromite (ZnCr2O4) nanocrystalline powders were obtained by two different chemical routes: the precursor method and the solution combustion method involving glycine-nitrates. The complex compound precursors, [ZnCr2(NH2CH2COO)8]·9H 2O and [ZnCr2(NH2CH2COOH) 4.5]·(NO3)8·6H2O, were characterized by chemical analysis, infrared spectroscopy (IR), ultraviolet-visible spectroscopy (UV-vis) and thermal analysis. The structure, morphology, surface chemistry and magnetic properties of ZnCr2O 4 powders were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), infrared and Raman spectroscopy (RS), ultraviolet-visible spectroscopy (UV-vis) and magnetic measurements. X-ray diffraction patterns indicated the chromite spinel phase with good crystallinity and an average crystallite size of approximately 18-27 nm. The band gap values ranged between 3.31 and 3.33 eV. The magnetic measurements indicated an antiferromagnetic transition at TN ∼ 17.5/18 K. © 2013 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)151-159
    Number of pages8
    JournalMaterials Research Bulletin
    Issue number1
    Publication statusPublished - 2014


    • A. Oxides
    • B. Chemical synthesis
    • C. Photoelectron spectroscopy
    • C. X-ray diffraction
    • D. Magnetic properties


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