Fe3+doped lanthanum nickelate perovskite ceramics were prepared by sol-gel method. Scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and diffractometer(XRD)were used to characterize the micro morphology,element distribution and phase of Fe3+doped lanthanum nickelate. The electromagnetic parameters of Fe3+ doped lanthanum nickel oxide ceramics were measured by using vector network analyzer, the absorption performance was simulated,and the influence of Fe3+ doping amount on the absorption mechanism of lanthanum nickel oxide perovskite ceramics was studied. The XRD results indicate that Fe3+ ions successfully occupy the lattice position of Ni3+ ions,forming perovskite structured ceramics. The SEM results indicate that Fe3+ doping has little effect on the particle morphology of LaNiO3 ceramic material,while the EDS results confirm that the distribution of Fe element in LaNiO3 ceramic material is uniform and non-agglomerated. In terms of absorption performance,the optimal doping amount of Fe3+ doped LaNiO3 ceramic material is 0.05,with a matching thickness of 1.40 mm and a maximum peak value of –18.145 dB. The frequency bandwidth below –10 dB is 1.42 GHz(9.38-10.8 GHz).
Preparation and microwave absorption properties of Fe3+ doped LaNiO3 perovskite ceramics
2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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