Ferrimagnetism of the magnetoelectric compoundprobed byNMR
Open Access
- 14 September 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 82 (9)
- https://doi.org/10.1103/physrevb.82.094422
Abstract
We present a thorough nuclear-magnetic-resonance (NMR) study of a single crystal of the magnetoelectric compound . The temperature dependence of the local electronic moments extracted from the NMR data is fully consistent with a magnetic phase transition from the high- paramagnetic phase to a low- ferrimagnetic state with 3/4 of the ions aligned parallel and 1/4 aligned antiparallel to the applied field of 14.09 T. The transition to this 3up-1down magnetic state is not accompanied by any splitting of the NMR lines or any abrupt modification in their broadening, hence there is no observable reduction in the crystal symmetry from its high- cubic space group. These results are in agreement with high-resolution x-ray diffraction and magnetization data on powder samples reported previously by Bos et al. [Phys. Rev. B 78, 094416 (2008)]. We also develop a mean-field theory description of the problem based on a microscopic spin Hamiltonian with one antiferromagnetic and one ferromagnetic nearest-neighbor exchange interaction. DOI: http://dx.doi.org/10.1103/PhysRevB.82.094422 © 2010 The American Physical Society
Keywords
This publication has 27 references indexed in Scilit:
- Multiferroicity: the coupling between magnetic and polarization ordersAdvances in Physics, 2009
- Classifying multiferroics: Mechanisms and effectsPhysics, 2009
- Tunnel junctions with multiferroic barriersNature Materials, 2007
- Multiferroic and magnetoelectric materialsNature, 2006
- The Renaissance of Magnetoelectric MultiferroicsScience, 2005
- Revival of the magnetoelectric effectJournal of Physics D: Applied Physics, 2005
- Magnetoelectric effect inPhysical Review B, 1994
- Guest editorialFerroelectrics, 1994
- Ferroelectrically induced ferromagnetismJournal of Physics C: Solid State Physics, 1977
- Anisotropy of the Magnetoelectric Effect inPhysical Review Letters, 1961