TY - JOUR
T1 - Anisotropic Magnetoelectric Coupling and Cotton-Mouton Effects in the Organic Magnetic Charge-Transfer Complex Pyrene-F4 TCNQ
AU - Yang, Yuying
AU - Liu, Guangfeng
AU - Liu, Jie
AU - Wei, Mengmeng
AU - Wang, Zhongxuan
AU - Hao, Xiaotao
AU - Maheswar Repaka, D. V.
AU - Ramanujan, Raju V.
AU - Tao, Xutang
AU - Qin, Wei
AU - Zhang, Qichun
PY - 2018/12/26
Y1 - 2018/12/26
N2 - Magnetoelectric coupling is of high current interest because of its potential applications in multiferroic memory devices. Although magnetoelectric coupling has been widely investigated in inorganic materials, such observations in organic materials are extremely rare. Here, we report our discovery that organic charge-transfer (CT) complex pyrene-2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (pyrene−F4 TCNQ) can display anisotropic magnetoelectric coupling. Investigation of the crystal structure of pyrene−F4 TCNQ complex demonstrates that the magnetoelectric coupling coefficient along the π-π interaction direction is much larger than the value along other directions. Furthermore, magnetoelectric coupling and magnetization can be tuned by changing the fluorine content in complexes. Besides, the Cotton−Mouton effect in pyrene−F4 TCNQ is observed, enabling the control of optomagnetic devices. These results can pave the way for a new method for the future development of organic CT complexes and their applications in perpendicular memory devices and energy-transfer-related multiferroics.
AB - Magnetoelectric coupling is of high current interest because of its potential applications in multiferroic memory devices. Although magnetoelectric coupling has been widely investigated in inorganic materials, such observations in organic materials are extremely rare. Here, we report our discovery that organic charge-transfer (CT) complex pyrene-2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (pyrene−F4 TCNQ) can display anisotropic magnetoelectric coupling. Investigation of the crystal structure of pyrene−F4 TCNQ complex demonstrates that the magnetoelectric coupling coefficient along the π-π interaction direction is much larger than the value along other directions. Furthermore, magnetoelectric coupling and magnetization can be tuned by changing the fluorine content in complexes. Besides, the Cotton−Mouton effect in pyrene−F4 TCNQ is observed, enabling the control of optomagnetic devices. These results can pave the way for a new method for the future development of organic CT complexes and their applications in perpendicular memory devices and energy-transfer-related multiferroics.
KW - anisotropy
KW - charge-transfer complex
KW - Cotton-Mouton effect
KW - magnetoelectric coupling
KW - organic magnetism
KW - anisotropy
KW - charge-transfer complex
KW - Cotton-Mouton effect
KW - magnetoelectric coupling
KW - organic magnetism
KW - anisotropy
KW - charge-transfer complex
KW - Cotton−Mouton effect
KW - magnetoelectric coupling
KW - organic magnetism
UR - http://www.scopus.com/inward/record.url?scp=85058889491&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85058889491&origin=recordpage
U2 - 10.1021/acsami.8b16848
DO - 10.1021/acsami.8b16848
M3 - RGC 21 - Publication in refereed journal
C2 - 30507119
SN - 1944-8244
VL - 10
SP - 44654
EP - 44659
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 51
ER -