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    題名: Determination of magnetic order of the rare-earth ions in multiferroic TbMn2O5
    作者: Johnson, R.D.;Bland, S.R.;Mazzoli, C.;Beale, T. A. W.;Du, C.-H.;Detlefs, C.;Wilkins, S. B.;Hatton, P. D.
    貢獻者: 淡江大學物理學系
    日期: 2008-09-01
    上傳時間: 2013-07-09 15:09:37 (UTC+8)
    出版者: College Park: American Physical Society
    摘要: We have employed resonant x-ray magnetic scattering to specifically probe the magnetic order of the rare-earth ions in multiferroic TbMn2O5. Two energy resonances were observed, one originated from the E1-E1 dipolar transition and the other from the E2-E2 quadrupolar transition. These resonances directly probe the valence 5d band and the partially occupied 4f band, respectively. First, full polarization analysis, which is a measurement of the scattered polarization as a function of incident polarization, confirmed a spin polarization of the terbium valence states (probed by the E1-E1 transition) by the Mn4+ spin density in the commensurate phase. Second, full polarization analysis data were collected in the low-temperature incommensurate and commensurate phases when tuned to the E2-E2 resonance. By employing a least-squares fitting procedure, the spin orientations of the terbium ion sublattice were refined.
    關聯: Physical Review B 78(10), 104407(9pages)
    DOI: 10.1103/PhysRevB.78.104407
    顯示於類別:[物理學系暨研究所] 期刊論文

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