Exotic H-field induced multiferroic behaviors in spin-frustrated systems
Abstract
Multiferroics are defined to have at least two ferroic (such as ferroelectric, ferromagnetic, ferroelastic, and ferrotoroidic) orderings in unique materials. Not only fundamental understanding but the potential application for the multiferroics are significant in the current research fields of condensed matter physics. In this talk, I will first briefly introduce (1) What are multiferroics? (2) What are the types (type I and Type-II) of magnetoelectric multiferroics? (3) Why is there rare multiferroics material? (4) What are the motivations of our research?
Then, I will present our recent results related to the titled topics: (1) Magnetic-field-induced second magnetic ordering and peculiar ferroelectric polarization in L-type ferrimagnetic Fe2(MoO4)3. (2) Magnetic-field-induced switchable polarization in spin-chain FePbBiO4. (3) Spin-reorientation induced hidden electric polarization in non-centrosymmetric berlinite magnetic oxide α-FePO4.
Final question, are those three categorized as type-III multiferroics left for audiences' discussion?

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Entangled!
25-28 June 2025, National Institute of Physics, University of the Philippines Diliman
Please visit the SPP2025 activity webpage for more information on this year's Physics Congress.