The Mechanism of the Magnetodielectric Response in a Molecule‐Based Trinuclear Iron Cluster Material
Dong Li, Xuan Wang, Hai‐Xia Zhao, Yan‐Ping Ren, Gui‐Lin Zhuang, La‐Sheng Long, Lan‐Sun Zheng
Abstract
Abstract Magnetodielectric response mechanisms are critical for the rational design and synthesis of molecule‐based magnetodielectric materials. Herein, the magnetodielectric response was investigated in the molecule‐based material [Fe 3 O(CH 3 COO) 6 (py) 3 ](py) ( 1 ). Its magnetodielectric coefficient (MD) is −2.8 % for phase transition III and −4.1 % for phase transition I. Study of the mechanism of the magnetodielectric response in 1 reveals that its magnetodielectric response at phase transition I is induced by the charge‐frustration of the trinuclear iron cluster, while that at phase transition III is attributed to the spin‐frustration of the trinuclear iron cluster, providing a new route for the design of magnetodielectric materials.