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Article overview
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Two-Dimensional Organic-Inorganic Room-Temperature Multiferroic | | Yali Yang
; Junyi Ji
; Junsheng Feng
; Shiyou Chen
; Laurent Bellaiche
; Hongjun Xiang
; | | Date: |
1 Aug 2022 | | Abstract: | Organic-inorganic multiferroics are promising for the next generation of
electronic devices. To date, dozens of organic-inorganic multiferroics have
been reported; however, most of them show magnetic Curie temperature much lower
than room temperature, which drastically hampers their application. Here, by
performing first-principle calculations and building effective model
Hamiltonians, we reveal a molecular orbital-mediated magnetic coupling
mechanism in two-dimensional Cr(pyz)2 (pyz=pyrazine), and the role that the
valence state of the molecule plays in determining the magnetic coupling type
between metal ions. Based on these, we demonstrate that a two-dimensional
organic-inorganic room-temperature multiferroic, Cr(h-fpyz)2 (h-fpyz=
half-fluoropyrazine), can be rationally designed by introducing
ferroelectricity in Cr(pyz)2 while keeping the valence state of the molecule
unchanged. Our work not only reveals the origin of magnetic coupling in 2D
organic-inorganic systems, but also provides a way to design room temperature
multiferroic materials rationally. | | Source: | arXiv, 2208.00591 | | Services: | Forum | Review | PDF | Favorites | |
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