Structural anomalies and multiferroic behavior in magnetically frustrated TbMn2O5open access
- Authors
- Chapon, Laurent.C.; Blake, Graeme.R.; Gutmann, Matthias Josef; Park, Soonyong; Hur, Namjung; Radaelli, Paolo G.; Cheong, Sang-Wook
- Issue Date
- Oct-2004
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.93, no.17, pp 177402 - 1-177402-4
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 93
- Number
- 17
- Start Page
- 177402
- End Page
- 1-177402-4
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/57344
- DOI
- 10.1103/PhysRevLett.93.177402
- ISSN
- 0031-9007
1079-7114
- Abstract
- We have studied the magnetostructural phase diagram of multiferroic TbMn2O5 as a function of temperature and magnetic field by neutron diffraction. Dielectric and magnetic anomalies are found to be associated with steps in the magnetic propagation vector, including a rare example of a commensurate-incommensurate transition on cooling below 24 K, and in the structural parameters. The geometrically frustrated magnetic structure is stabilized by "canted antiferroelectric" displacements of the Mn3+ ions, an example of the magnetic Jahn-Teller effect. The Tb moments order ferromagnetically at low temperatures in an applied field, while the Mn magnetic structure is largely unchanged.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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