Giant tunability of ferroelectric polarization in GdMn2O 5

N. Lee, C. Vecchini, Y. J. Choi, L. C. Chapon, A. Bombardi, P. G. Radaelli, S. W. Cheong

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

Giant tunability of ferroelectric polarization (ΔP=5000 μC/m2) in the multiferroic GdMn2O5 with external magnetic fields is discovered. The detailed magnetic model from x-ray magnetic scattering results indicates that the Gd-Mn symmetric exchange striction plays a major role in the tunable ferroelectricity of GdMn2O5, which is in distinction from other compounds of the same family. Thus, the highly isotropic nature of Gd spins plays a key role in the giant magnetoelectric coupling in GdMn2O5. This finding provides a new handle in achieving enhanced magnetoelectric functionality.

Original languageEnglish (US)
Article number137203
JournalPhysical review letters
Volume110
Issue number13
DOIs
StatePublished - Mar 26 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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