Neutron powder diffraction study on Fe(II)-azido layered magnetic honeycombs
By linking Fe(II) ions with azido bridges, a 2D magnetic layered complex [Fe(4-Etpy)2(N3)2]n has been synthesized. It is the first pure 2D Fe(II)-azido polymer as well as the first example of Fe(II) layer with honeycomb topology. The magnetic susceptibility and the neutron flipping ratio data suggest that two ferromagnetic phase transitions possibly occur at 28 K and 39 K. The ac susceptibility also indicates that a spin glass behavior may take place at around 25 K. Due to the lack of inter-layer exchange pathways, the occurrence of long-range magnetic order is unlikely. Neutron powder diffraction measurements with higher resolution and more investigated temperatures will be necessary to reveal the nature of the complicated magnetism of this 2D magnetic system.
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FU Zhendong; FENG Erxi; Thomas C. Hansen; NASSIF Vivian; SUARD Emmanuelle and ZHENG Yan-Zhen. (2020). Neutron powder diffraction study on Fe(II)-azido layered magnetic honeycombs. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2802
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