Effect of Proton Irradiation on Magnetic Properties of Two-Dimensional Ni(Ii) Molecular Magnet
2022; RELX Group (Netherlands); Linguagem: Inglês
10.2139/ssrn.4159687
ISSN1556-5068
AutoresDominik Czernia, Piotr Konieczny, Ewa Juszyńska‐Gałązka, Janusz Lekki, Anabel Berenice González Guillén, Wiesław Łasocha,
Tópico(s)Advanced NMR Techniques and Applications
ResumoThe influence of 1.9 MeV proton irradiation on structural and magnetic properties has been explored in the two-dimensional (2D) NiSO4(1,3-phenylenediamine)2 coordination ferrimagnet. The infrared spectroscopy (IR) shown the core structure remained the same regardless of the fluence a sample received, and only local structural changes were present. No additional phase was detected, and the observed Curie temperature of TC = 24 K remained constant after irradiation. Isothermal magnetization measured at T = 2.0 K varied with proton dose achieving the 50% increase of magnetization at the highest measured field µ0Hdc = 7 T. The significant narrowing of the hysteresis loop was observed with the reduction of coercive field and remnant magnetization by even 90% and 25%, respectively, compared to the non-irradiated sample. The observed results are accounted for the increased freedom of magnetic moment rotation and intralayer exchange couplings modification.
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