Abstract
We report in this paper the temperature evolution of the magnetic structure of GdMn2O5, in the range 2-40 K, studied by neutron diffraction on an isotope-enriched powder. We detail a thorough analysis of the microscopic mechanisms needed to release the different magnetic frustrations that are at the origin of the polarization. In addition to the usual exchange-striction term, known to be at the origin of the polarization in this family, an additional exchange-striction effect between the Gd3+ and Mn3+ spins is found to be responsible for the very large polarization in the Gd compound.
Original language | English (US) |
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Article number | 085128 |
Journal | Physical Review B |
Volume | 97 |
Issue number | 8 |
DOIs | |
State | Published - Feb 15 2018 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics