Observation of magnetic field-induced second magnetic ordering and peculiar ferroelectric polarization in L-type ferrimagnetic Fe2(MoO4)3

Ajay Tiwari, D. Chandrasekhar Kakarla, M.-J. Hsieh, J.-Y Lin, C. W. Wang, L. K. Tseng, C. E. Lu, Arkadeb Pal, T. W. Kuo, Mitch M. C. Chou, and H. D. Yang
Phys. Rev. Materials 6, 094412 – Published 28 September 2022
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Abstract

Fe2(MoO4)3 was synthesized and characterized as a prototype of L-type ferrimagnets (L-FiM) with an ordering temperature TN112K using magnetic susceptibility (χ), specific heat (Cp), and dielectric (ɛ) anomaly. Two remarkable findings are magnetic field (H) induced (i) an additional magnetic phase transition at TN2 below TN1; and (ii) the emergence of flexible ferroelectric polarization (P) with the tuning parameters H and T below TN2. Thus, the H-T phase diagram for spin-induced type-II multiferroics was established. In contrast to some known multiferroics with a critical field-induced spin-flip P below TN1, the observed multiferroic nature is exotic. The origin of the profound multiferroic nature may be hidden in the complex T-and H-dependent spin and lattice structures. Consequently, the schematic picture of H-induced possible change of lattice symmetry and conical spin structure has been proposed. More experimental and theoretical works providing solid evidence and interpretations have been suggested to explore these peculiar multiferroic phenomena.

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  • Received 12 May 2022
  • Accepted 16 September 2022

DOI:https://doi.org/10.1103/PhysRevMaterials.6.094412

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Ajay Tiwari1, D. Chandrasekhar Kakarla1,*, M.-J. Hsieh2, J.-Y Lin2,3, C. W. Wang4, L. K. Tseng1, C. E. Lu1, Arkadeb Pal1, T. W. Kuo1, Mitch M. C. Chou5,6, and H. D. Yang1,6,†

  • 1Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
  • 2Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
  • 3Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
  • 4National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
  • 5Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
  • 6Center of Crystal Research, National Sun Yat-sen University, Kaohsiung 80424, Taiwan

  • *Corresponding author: chandu@mail.nsysu.edu.tw
  • Corresponding author: yang@mail.nsysu.edu.tw

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Issue

Vol. 6, Iss. 9 — September 2022

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