Charge-Transfer Magnetoelectrics of Polymeric Multiferroics

被引：40

作者：

Qin, Wei ^{[1
]}

Jasion, Daniel ^{[1
]}

Chen, Xiaomin ^{[2
]}

Wuttig, Manfred ^{[2
]}

Ren, Shenqiang ^{[1
]}

机构：

[1] Univ Kansas, Dept Chem, Lawrence, KS 66045 USA

[2] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

来源：

ACS NANO | 2014年 / 8卷 / 04期

基金：

美国国家科学基金会;

关键词：

organic multiferroics; charge transfer; ferroelectricity; magneto-electric coupling; ROOM-TEMPERATURE FERROELECTRICITY; ENERGY; P3HT/PCBM; SINGLET; STATES; DIODE;

D O I：

10.1021/nn500323j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The renaissance of multiferroics has yielded a deeper understanding of magneto-electric coupling of inorganic single-phase multiferroics and composites. Here, we report charge-transfer polymeric multiferroics, which exhibit external field-controlled magnetic, ferroelectric, and microwave response, as well as magneto-dielectric coupling. The charge-transfer-controlled ferroic properties result from the magnetic field-tunable triplet exciton which has been validated by the dynamic polaron-bipolaron transition model. In addition, the temperature-dependent dielectric discontinuity and electric-field-dependent polarization confirms room temperature ferroelectricity of crystalline charge-transfer polymeric multiferroia due to the triplet exciton, which allows the tunability of polarization by the photoexcitation.

引用

页码：3671 / 3677

页数：7

共 34 条

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