Observation of magnetic-field-induced ferroelectricity in a compound CaFe3O(PO4)3

Geometrically frustrated kagome materials reveal many novel states of matter ranging from quantum spin liquids to multiferroics. Herein, we study the compound CaFe3O(PO4)3, which has a quasi-two-dimensional lattice of Fe3+ ions with spin S = 5/2. Electrical and magnetic properties have been investig...

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Bibliographic Details
Published in:Journal of applied physics 2023-04, Vol.133 (16)
Main Authors: Voma, U. K., Shahee, A., Kim, Kwang-Tak, Lee, Jungwoo, Boya, K., Bhowal, S., Kim, Kee Hoon, Koteswararao, B.
Format: Article
Language:English
Subjects:
Applied physics
Couplings
Ferroelectric materials
Ferroelectricity
Ferromagnetism
Magnetic properties
Spin liquid
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Summary:Geometrically frustrated kagome materials reveal many novel states of matter ranging from quantum spin liquids to multiferroics. Herein, we study the compound CaFe3O(PO4)3, which has a quasi-two-dimensional lattice of Fe3+ ions with spin S = 5/2. Electrical and magnetic properties have been investigated on polycrystalline specimens of CaFe3O(PO4)3 using magnetization, pyroelectric, and magnetoelectric current measurements. The system undergoes a weak ferromagnetic-type ordering at TC1 ∼ 19.5 K, followed by another transition at TC2 ∼ 9 K. While no ferroelectric polarization (P) is observed at a zero magnetic field (H), the applied H induces P below TC2. At the temperature of 2.5 K, P starts to increase above H of 1 T, shows a maximum value at 3.15 T, and then decreases at higher H regions. The observed results suggest that CaFe3O(PO4)3 should be a magnetic-field-induced ferroelectric compound with frustrated magnetic couplings.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0138374