Control of ferroelectric phases by 4f magnetic moments in multiferroic RMnO3 crystals

H. Kuwahara, K. Noda, M. Akaki, F. Nakamura, D. Akahoshi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We have investigated the magnetoelectric (ME) properties of the orthorhombic RMnO3 (R=mixed rare earth ions) crystals with and without the 4/magnetic moments, while keeping an average ionic size of R. In the presence of the magnetic contribution from the R ions ((Eu,Ho)MnO3), we have observed the ferroelectric polarization along the c axis (P c) in a zero field, which arises from the bc spiral structure stabilized by the anisotropic exchange interaction between the R and Mn sublattices like TbMnO3. The Pc phase can be transferred to Pa by application of fields of ∼1.5 T parallel to the b axis. The observed decrease of transition field compared with TbMnO3 suggests that the magnetic contribution and the local distortion of the R ions are key factors for governing the ME properties.

Original languageEnglish
Title of host publicationFerroelectrics and Multiferroics
PublisherMaterials Research Society
Number of pages6
ISBN (Print)9781604234183
Publication statusPublished - 2006
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: 2006 Nov 272006 Dec 1

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2006 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA


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