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Organic Multiferroic Magnetoelastic Complexes
Author(s) -
Wei Mengmeng,
Song Kepeng,
Yang Yuying,
Huang Qikun,
Tian Yufeng,
Hao Xiaotao,
Qin Wei
Publication year - 2020
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.202003293
Subject(s) - condensed matter physics , materials science , ferromagnetism , multiferroics , spin polarization , magnetization , tetracyanoquinodimethane , electron , ferroelectricity , magnetic field , physics , optoelectronics , quantum mechanics , molecule , dielectric
The design of crystal structures aids the discovery of interesting physical phenomena in organic crystals. In this work, the optimization of the coronene–tetracyanoquinodimethane (TCNQ) structure generates non‐degenerate energy levels of spin‐up and spin‐down electrons after charge transfer, producing spontaneous spin polarization, leading to pronounced ferromagnetism. The deformed crystal lattice can significantly affect the saturation magnetization of organic ferromagnets to present a remarkable magnetoelastic coupling. Furthermore, the magnetic‐field‐induced lattice shrinkage of the ferromagnetic crystals supports a spin–lattice‐interaction‐dependent magnetoelastic coupling. This concept of organic magnetoelastic coupling will pave the way for the rapid mechanical control of spin polarization in organic multiferroic magnetoelastic materials.