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

Johnson, RD; Bland, SR; Mazzoli, C; Beale, TAW; Du, CH; Detlefs, C; Wilkins, SB; Hatton, PD

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.

Citation

Johnson, R., Bland, S., Mazzoli, C., Beale, T., Du, C., Detlefs, C., …Hatton, P. (2008). Determination of magnetic order of the rare-earth ions in multiferroic TbMn2O5. Physical review B, 78(10), Article 104407. https://doi.org/10.1103/physrevb.78.104407

• Journal Article Type: Article
• Publication Date: Sep 1, 2008
• Deposit Date: Nov 27, 2012
• Publicly Available Date: Nov 27, 2012
• Journal: Physical review B - Condensed Matter and Materials Physics
• Print ISSN: 1098-0121
• Electronic ISSN: 1550-235X
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 78
• Issue: 10
• Article Number: 104407
• DOI: https://doi.org/10.1103/physrevb.78.104407
• Keywords: X-ray-scattering, Resonant exchange scattering, Polarization dependence, Neutron-diffraction, Phase-transitions, Quadrupolar, Plates, Edge.
• Public URL: https://durham-repository.worktribe.com/output/1551479