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Erschienen in:
04.02.2017
Preparation and microwave absorbing performance of TiO2/ NiFe2O4 /hollow glass microsphere composite with core–shell structure
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 11/2017
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Abstract
Microwave absorbing TiO2/NiFe2O4/HGM composite with core–shell structure was prepared via a facile two-step method. The obtained composite was then investigated by SEM, TEM, XRD, XPS, VSM and a vector network analyzer. The results indicated that HGM was completely coated by NiFe2O4 nanospheres after the hydrothermal reaction, and TiO2/NiFe2O4/ HGM composite with core–shell structure was also successfully synthesized. The composite exhibited excellent magnetic performance and microwave absorption capacity. Measurement of VSM suggested that the saturated magnetization values (Ms) of TiO2/NiFe2O4/HGM was 27.79 emu.g− 1. When the frequency was 10.3 GHz, the R
L value of TiO2/NiFe2O4/HGM composite with the thickness of 2.6 mm could reach up to −20 dB. The obtained composite exhibited excellent microwave absorbing properties, which could be used as a promising EM wave absorber.