Please use this identifier to cite or link to this item:
|Title:||Coupled short-range ferroelectric and magnetic order in PbFe1/2Nb1/2O3|
|Publisher:||American Physical Society|
|Citation:||Stock, C., Dunsiger, S. R., Mole, R. A., Li, X., & Luo, H. (2013). Coupled short-range ferroelectric and magnetic order in PbFe1/2Nb1/2O3. Physical Review B, 88(9), Article Number 094105. doi:10.1103/PhysRevB.88.094105|
|Abstract:||A neutron scattering investigation of the magnetoelectric coupling in PbFe1/2Nb1/2O3 has been undertaken. Ferroelectric order occurs below 400 K, as evidenced by the softening with temperature and subsequent recovery of the zone center transverse optic phonon mode energy ((h) over bar Omega(0)). Over the same temperature range, magnetic correlations become resolution limited on a terahertz energy scale. In contrast to the behavior of nonmagnetic disordered ferroelectrics [namely Pb(Mg, Zn)(1/3)Nb2/3O3], we report the observation of a strong deviation from linearity in the temperature dependence of ((h) over bar Omega(0))(2). This deviation is compensated by a corresponding change in the energy scale of the magnetic excitations, as probed through the first moment of the inelastic response. The coupling between the short-range ferroelectric and antiferromagnetic correlations is consistent with calculations showing that the ferroelectricity is driven by the displacement of the body-centered iron site, illustrating the multiferroic nature of magnetic-lead-based relaxors in the dynamical regime. © 2013, American Physical Society.|
|Gov't Doc #:||5432|
|Appears in Collections:||Journal Articles|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.