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Magnetoelectric coupling in polycrystalline FeVO 4

Abstract : We report coupling between magnetic and electric orders for antiferromagnetic polycrystalline FeVO4 in which magnetism-induced polarization has been recently found in noncollinear antiferromagnetic state below the second antiferromagnetic phase transition at TN2≈15.7 K. In this low symmetry phase space group P¯1, the magnetic field dependence of electric polarization evidences a clear magnetoelectric coupling in the noncollinear spin-configured antiferromagnetic phase. The discontinuity of magnetodielectric effect observed at the vicinity of the polar to nonpolar transition evidences competition between different magnetodielectric couplings in the two different antiferromagnetic states. The existence of thermal expansion anomaly near TN2 and magnetostriction effect support magnetoelastically mediated scenario of the observed magnetoelectric effect.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-02264071
Contributor : Elisabeth van T Hof <>
Submitted on : Tuesday, August 6, 2019 - 11:22:22 AM
Last modification on : Friday, April 24, 2020 - 10:28:08 AM

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Bohdan Kundys, Christine Martin, Charles Simon. Magnetoelectric coupling in polycrystalline FeVO 4. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2009, 80 (17), ⟨10.1103/PhysRevB.80.172103⟩. ⟨hal-02264071⟩

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