Magnetic control of ferroelectric polarization in a self-formed single magnetoelectric domain of multiferroic Ba3NbFe3Si 2O14

Nara Lee, Young Jai Choi, Sang Wook Cheong

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We have discovered strong magnetoelectric (ME) effects in the single chiral-helical magnetic state of single-crystalline langasite Ba 3NbFe3Si2O14 that is crystallographically chiral. The ferroelectric polarization, predominantly aligned along the a axis below the Nèel temperature of ∼27 K, changes in a highly non-linear fashion in the presence of in-plane magnetic fields (H) perpendicular to the a axis (H//b*). This ME effect as well as smaller ME effects in other directions exhibit no poling dependence, suggesting the presence of a self-formed single ME domain. In addition, these ME effects accompany no-measurable hysteresis, which is crucial for many technological applications.

Original languageEnglish
Article number072904
JournalApplied Physics Letters
Issue number7
Publication statusPublished - 2014 Jan 1


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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