Near room temperature ferromagnetism of copper phthalocyanine thin films
Near room temperature ferromagnetism of copper phthalocyanine thin films
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铜酞菁薄膜的近室温铁磁性
DOI：
10.1016/j.apsusc.2015.08.164
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发表时间：
2015-11
影响因子：
6.7
通讯作者：
ChongDe Cao
中科院分区：
文献类型：
--
作者：
Lei Chen;Kai Qiao;JiaWei Xu;ChongDe Cao
We reported near room temperature ferromagnetism ofα-CuPc films without and with light Ni-doping. Two samples were characterized by X-ray photoelectron spectroscopy (XPS) to confirm the absence of other ferromagnetic impurities. Theα-CuPc film exhibited ferromagnetic hysteresis with saturation magnetization of ∼6.77 emu/cm3and coercivity of ∼96 Oe at 280 K, while that of the Ni-dopedα-CuPc film are ∼0.69 emu/cm3and ∼113 Oe, respectively. Through the density functional theory (DFT) calculations, the origin of the ferromagnetism arise from Cu 3dstates and N 2s2pelectronic spin polarization, as well asp-dexchange coupling interactions, and spin-unbalanced electronic structure of C 2pinduced by the π–π interactions.
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