Determination of magnetic order of the rare-earth ions in multiferroic TbMn2O5

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Title:	Determination of magnetic order of the rare-earth ions in multiferroic TbMn2O5
Authors:	Johnson, R.D.;Bland, S.R.;Mazzoli, C.;Beale, T. A. W.;Du, C.-H.;Detlefs, C.;Wilkins, S. B.;Hatton, P. D.
Contributors:	淡江大學物理學系
Date:	2008-09-01
Issue Date:	2013-07-09 15:09:37 (UTC+8)
Publisher:	College Park: American Physical Society
Abstract:	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.
Relation:	Physical Review B 78(10), 104407(9pages)
DOI:	10.1103/PhysRevB.78.104407
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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