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    Synthesis and Physicochemical Studies of Perovskite Manganite La0.8Ca0.2Nn1−xCoxO3 (0 ≤ x ≤ 0.3)

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    Date
    2017-09-30
    Author
    Turki, D.
    Ghouri, Zafar Khan
    Al-Meer, Saeed
    Elsaid, Khaled
    Ahmad, M.I.
    Easa, Ahmed
    Ellouze, M.
    Hlil, E.K.
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    Abstract
    The physicochemical properties of La0.8Ca0.2Mn1−xCoxO3 nanopowders as a function of Co content (x) have been investigated. La0.8Ca0.2Mn1−xCoxO3 nanopowders were synthesized by sol-gel method and morphologically and structurally well characterized by Scanning electron microscopic (SEM), Infrared spectroscopic (IR) and Raman spectroscopic techniques. IR spectra shows peak at around 600 cm−1 attributed to the stretching mode of MnO6 octahedral and peak at 700 cm−1 assigned to La-Ca-O-Mn bending vibrations. Raman spectra indicate peaks at around 512 and 652 cm−1 related to the Jahn-Teller octahedral distortions. The intensity of these peaks increases with increasing Co doping. The UV-visible spectra were measured in the frequency range of 200-800 nm and two energy gaps were found at 1.63 eV and 3.294 eV for x = 0, 0.1 and 0.3.
    DOI/handle
    http://dx.doi.org/10.4283/JMAG.2017.22.3.353
    http://hdl.handle.net/10576/5665
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    • Chemistry & Earth Sciences [‎227 ‎ items ]
    • Chemical Analysis Lab [‎41 ‎ items ]

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