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Persistent URL http://purl.org/net/epubs/work/33304
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Record Id 33304
Title Structural anomalies and multiferroic behavior in magnetically frustrated TbMn2O5
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.
Keywords Physics , Crystal , ISIS 2005
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Language English (EN)
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Journal Article Phys Rev Lett 93 (2004): 177402. doi:10.1103/PhysRevLett.93.177402 2004
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