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Updated: Jun 18, 2026

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Published on: March 24, 2019
Novel multiferroic state of Eu1-xYxMnO3 in high magnetic fields
M Tokunaga1, Y Yamasaki, Y Onose
1The Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba 277-8581, Japan. tokunaga@issp.t.u-tokyo.ac.jp
Abstract:
Magnetic and dielectric properties of Eu1-xYxMnO3 (x=0 and 0.4) are studied in pulsed magnetic fields up to 55 T. For x=0, application of magnetic fields higher than 20 T along the b axis causes magnetic transitions accompanied by generation of electric polarization (P) along the a axis. Similar first-order transitions are also observed in crystals of x=0.4, in which the ground state at zero magnetic field is already a ferroelectric P parallel a phase of different origin. Realistic model calculation indicates the presence of a novel multiferroic state induced by the spin exchange striction mechanism in high magnetic fields as an essential nature of the frustrated Mn spin system in this class of manganites.
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