Magnetoelectric coupling in perovskite rare-earth manganites
Abstract
The relationships among magnetism, lattice modulation, and dielectric properties have been investigated for RMnO3 (R = Eu, Gd, Tb, and Dy) with perovskite structure. These compounds show a transition to an incommensurate lattice structure below their Néel temperature, and subsequently undergoes an incommensurate-commensurate phase transition. Dielectric anomalies were observed at the respective transition temperatures. For TbMnO3 and DyMnO3 it was found that the incommensurate-commensurate transition is accompanied by a ferroelectric transition, associated with a lattice modulation in the commensurate phase. We will also present the gigantic magnetoelectric and magnetocapacitance effects observed in these manganites.
- Publication:
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APS March Meeting Abstracts
- Pub Date:
- March 2004
- Bibcode:
- 2004APS..MARY19002K