Organic Ammonium Modulated Mixed-Valence Multiferroics Exhibiting Large Spontaneous Strain and Exchange Bias

Abstract

Three isotopological (stb) mixed-valence iron-formate frameworks, [A][FeIII(FeII)2(HCOO)9] (1-3), were constructed and exhibit ferroelastic phase transition with spontaneous strain of 0.16. 1-3 are spin-canted antiferromagnets with distinct TN from 26 K to 36 K and display exchange bias (EB) performance induced by the pinning of the spins at distinct sublattices.

Supplementary files

Article information

Article type
Communication
Submitted
08 Jul 2025
Accepted
15 Sep 2025
First published
16 Sep 2025

Chem. Commun., 2025, Accepted Manuscript

Organic Ammonium Modulated Mixed-Valence Multiferroics Exhibiting Large Spontaneous Strain and Exchange Bias

Q. Yan, S. Han, T. Xu, C. Ji, L. Lv, Z. Q. Yao, J. Zhao and F. Liu, Chem. Commun., 2025, Accepted Manuscript , DOI: 10.1039/D5CC03844H

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