Phonon mode links ferroicities in multiferroic [(CH3)2NH2] Mn(HCOO ) 3
Abstract
We combined magnetoinfrared spectroscopy, magnetization, and lattice dynamics calculations to explore the phase transitions in multiferroic [(CH3)2NH2] Mn (HCOO) 3 . Both the 185 K ferroelectric transition and the magnetically driven transition to the fully saturated state at 15.3 T involve the formate bending mode, direct evidence of a common connection between the two types of ferroicities and for how lattice distortions promote high-temperature magnetoelectric coupling in this system.
- Publication:
-
Physical Review B
- Pub Date:
- November 2017
- DOI:
- 10.1103/PhysRevB.96.180305
- Bibcode:
- 2017PhRvB..96r0305H