Johnson, R.D. and Bland, S.R. and Mazzoli, C. and Beale, T.A.W. and Du, C.H. and Detlefs, C. and Wilkins, S.B. and Hatton, P.D. (2008) 'Determination of magnetic order of the rare-earth ions in multiferroic TbMn2O5.', Physical review B., 78 (10).
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.
|Keywords:||X-ray-scattering, Resonant exchange scattering, Polarization dependence, Neutron-diffraction, Phase-transitions, Quadrupolar, Plates, Edge.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||http://dx.doi.org/10.1103/PhysRevB.78.104407|
|Publisher statement:||© 2008 The American Physical Society|
|Record Created:||27 Nov 2012 11:35|
|Last Modified:||27 Nov 2012 11:59|
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