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    題名: Electronic Structures of Hexagonal Manganites HoMnO3Studied by X-ray Absorption Near-edge Structure
    作者: 張經霖;Chang, C. L.
    貢獻者: 淡江大學物理學系
    日期: 2007
    上傳時間: 2009-12-31 10:50:24 (UTC+8)
    出版者: American Institute of Physics (AIP)
    摘要: X‐ray absorption near‐edge structure (XANES) spectroscopy is sensitive to the chemical environments and the geometrical arrangement of the atoms surrounding the absorbing atom. This aspect has been used to understand the electronic structure of a non‐perovskite hexagonal prototype manganites, HoMnO3. While the pre‐edge spectral features observed at O K‐edge arise due to the crystal field effects and results in five non‐degenerate Mn 3d‐ O 2p derived orbitals, the Mn K‐edge spectra show that Mn ions are in the geometrically frustrated triangular lattices. Above results may provide the possible reasons for the coexistence of magnetism and ferroelectric nature in these manganites.
    關聯: AIP Conference Proceedings 879, pp.1659-1662
    顯示於類別:[物理學系暨研究所] 期刊論文

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