Abstract
CeO2 nanopoles have been successfully synthesized by a hydrothermal method using CeCl3·7H2O as cerium, NaOH as mineralizer, and ethylenediamine as complexant. X-ray diffraction (XRD) and selective area electron diffraction (SAED) infered that the as-synthesized CeO2 nanopoles exhibited a fluorite cubic structure and monocrystalline phase. Scanning electron microscope (SEM) and transmission electron microscope (TEM) showed that CeO2 have pole-like nanostructures. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy reflected the existence of the oxygen vacancies and Ce3+ ions in the CeO2 nanopoles. Magnetization measurements exhibited room temperature ferromagnetism (RTFM) with saturation magnetization (Ms) of 0.167emu/g, and coercivity (HC) of 165Oe, which is likely associated with Ce3+ ions and oxygen vacancies in the CeO2 nanopoles.
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