Multiferroicity and Phase Diagram of Ferro-Rotational Magnet RbFe(SO4)2

Published

March 27, 2025

Author(s)

Junjie Yang, Dimuthu Obeysekera, William Ratcliff, Lu Li, Sabine N. Neal, Janice L. Musfeldt, Shinichiro Yano

Abstract

Ferro-rotational magnet RbFe(SO4)2 has attracted attention for its stable ferro-rotational phase and electric-field-controlled magnetic chirality. This work presents the multiferroic properties and H–T phase diagram of RbFe(SO4)2, which have been underexplored. Our measurements of magnetic susceptibility, ferroelectric polarization, and dielectric constant under various magnetic fields reveal four distinct phases: (I) a ferroelectric and helical magnetic phase below 4 K and 6 T, (II) a paraelectric and collinear magnetic phase below 4 K and above 6 T, (III) a paraelectric and non-collinear magnetic phase below 4 K and above 9 T, and (IV) a paraelectric and paramagnetic above 4 K. This study clarifies the multiferroic behavior and H–T phase diagram of RbFe(SO4)2, providing valuable insights into ferro-rotational magnets.

Citation

Journal of Physics Condensed Matter

Volume

37

Issue

17

Pub Type

Journals

Download Paper

https://doi.org/10.1088/1361-648X/adc064

Local Download

Keywords

magnetism, multiferroic

Citation

Yang, J. , Obeysekera, D. , Ratcliff, W. , Li, L. , Neal, S. , Musfeldt, J. and Yano, S. (2025), Multiferroicity and Phase Diagram of Ferro-Rotational Magnet RbFe(SO4)2, Journal of Physics Condensed Matter, [online], https://doi.org/10.1088/1361-648X/adc064, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959021 (Accessed October 9, 2025)