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Construction of Magnetoelectric Composites with a Large Room‐Temperature Magnetoelectric Response through Molecular–Ionic Ferroelectrics
Author(s) -
Li Dong,
Zhao XueMei,
Zhao HaiXia,
Dong XinWei,
Long LaSheng,
Zheng LanSun
Publication year - 2018
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.201803716
Subject(s) - materials science , magnetoelectric effect , ferroelectricity , multiferroics , composite number , dipole , composite material , coupling (piping) , electric field , ionic bonding , dielectric , optoelectronics , ion , chemistry , physics , organic chemistry , quantum mechanics
Magnetoelectric materials with a large magnetoelectric response, a low operating magnetic (or electric) field, and a room‐temperature (or higher) operating temperature are of key importance for practical applications. However, such materials are extremely rare because a large magnetoelectric response often requires strong coupling between spins and electric dipoles. Herein, an example of a magnetoelectric composite is prepared by using a room‐temperature multiaxial molecular–ionic ferroelectric, tetramethylammonium tetrachlorogallate(III) ( 1 ). Investigation of the magnetoelectric effect of the magnetoelectric laminate composite indicates that its room‐temperature magnetoelectric voltage coefficient (α ME ) is as high as 186 mV cm −1 Oe −1 at H DC = 275 Oe and at the H AC frequency of ≈39 kHz, providing a valid approach for the preparation of magnetoelectric materials and adding a new member to the magnetoelectric material family.