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

doi:10.1103/physrevb.78.104407

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

Authors

RD Johnson

SR Bland

C Mazzoli

TAW Beale

CH Du

C Detlefs

SB Wilkins

Professor Peter Hatton p.d.hatton@durham.ac.uk
Professor

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
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.