Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

On the Anomalous Magnetic Behavior and the Multiferroic Properties in BiMn2O5


Liu,  Q.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Liu, Q., Sallagoity, D., Josse, M., & Toulemonde, O. (2013). On the Anomalous Magnetic Behavior and the Multiferroic Properties in BiMn2O5. Inorganic Chemistry, 52(14), 7853-7861. doi:10.1021/ic302800b.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-1E94-3
Sealed-tube synthesis of BiMn2O5 materials and their physical properties have rationally been reinvestigated depending on the reactants. The aim of the study was to characterize its potential multiferroic properties and to investigate the anomalous magnetic properties in relation to the expected ferroelectric properties. Rietveld refinement of the room temperature X-ray diffraction data shows the stability of the crystallographic structure with a Mn3+/Mn4+ ratio far from 1 because of bismuth and oxygen deficiencies despite the sealed-tube synthesis. Our detailed magnetic susceptibility and specific heat data analysis unambiguously support an intrinsic anomalous magnetic behavior in relation to the establishment of a magnetic short-range ordering far from the Neel temperature. Around room temperature, oxygen vacancies are responsible for supporting the dielectric loss peak measured, and, interestingly, the so-called T*, which was underlined in relation to an anomalous phonon shift (Garcia-Flores, A. F.; et al. Phys. Rev. B 2006, 73, 104411), is not a characteristic temperature in relation to the multiferroic properties because no ferroelectric transition was detected.