A single-molecule magnet assembly exhibiting a dielectric transition at 470 K

Yu-Xia Wang , Wei Shi , Han Li , You Song , Liang Fang , Yanhua Lan (1) , Annie K. Powell (1) , Wolfgang Wernsdorfer (2) , Liviu Ungur (3) , Liviu F. Chibotaru (3) , Mingrong Shen , Peng Cheng

1 Institut of Inorganic Chemistry
2 NEEL - QuantECA - Circuits électroniques quantiques Alpes
3 Division of Quantum and Chemistry

A triangular Dy(III) single-molecule magnet (SMM) exhibiting ferroelectric bistability is assembled in an acentric space group Pna2(1). Hysteresis loops associated with its SMM behavior together with a two-step slow relaxation of the magnetization are observed below 30 K. A transition with dielectric anomalies between a paraelectric and a ferroelectric phase occurs at 470 K.

Domaines: Chimie

Yu-Xia Wang, Wei Shi, Han Li, You Song, Liang Fang, et al.. A single-molecule magnet assembly exhibiting a dielectric transition at 470 K. Chemical Science, 2012, 3 (12), pp.3366-3370. ⟨10.1039/C2SC21023A⟩. ⟨hal-00973473⟩