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Magnetoelectric Radical Hydrocarbons
Author(s) -
Guan YingShi,
Zhong Guohua,
Hu Yong,
Cannella Anthony F.,
Li Changning,
Lee Namhoon,
Jia Quanxi,
Lacy David C.,
Ren Shenqiang
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201806263
Subject(s) - materials science , radical , coupling (piping) , electron , chemical physics , open shell , photochemistry , ferroelectricity , unpaired electron , optoelectronics , organic chemistry , chemistry , physics , composite material , quantum mechanics , dielectric
The molecular radicals, systems with unpaired electrons of open‐shell electronic structures, set the stage for a multidisciplinary science frontier relevant to the cooperative magnetic exchange interaction and magnetoelectric effect. Here ferroelectricity together with magnetic spin exchange coupling in molecular radical hydrocarbon solids is reported, representing a new class of magnetoelectrics. Electronic correlation through radical–radical interactions plays a decisive role in the coupling between magnetic and charge orders. A substantial photoconductance and visible‐light photovoltaic effect are found in radical hydrocarbons. The ability to simultaneously control and retrieve the changes in magnetic and electrical responses opens up a new breadth of applications, such as radical magnetoelectrics, magnets, and optoelectronics.