Abstract
Using pulsed magnetic fields up to we have measured the bulk magnetization and electrical polarization of and have studied its magnetic structure by time-of-flight neutron Laue diffraction. Our data establish the existence of a reentrant magnetoelectric phase between and . We show that a magnetized version of the zero field commensurate structure explains the magnetoelectric response quantitatively. The stability of this structure suggests a field-dependent spin anisotropy. Above , a magnetoelectrically inactive, short-wavelength incommensurate structure is identified. Our results demonstrate the combination of pulsed fields with epithermal neutron Laue diffraction as a powerful method to probe even complex phase diagrams in strong magnetic fields.
- Received 1 April 2016
- Revised 20 January 2017
DOI:https://doi.org/10.1103/PhysRevB.95.064421
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