The multiferroic HoMn2 O5 is a frustrated magnetic system with a non-collinear commensurate structure in its ferroelectric state. This work presents polarization measurements under isotropic pressure showing the stabilization of the high ferroelectric polarization state. This is associated with the pressure induced phase transition from an incommensurate magnetic structure to a commensurate one once the critical pressure is passed as shown by elastic powder neutron diffraction measurements. In addition, the small increase in the polarization upon spin reorientation in the commensurate magnetic state of HoMn2 O5 is associated with a change in the magnetic structure without change in commensurability.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering