Facile synthesis of hierarchical chrysanthemum-like copper cobaltate-copper oxide composites for enhanced microwave absorption performance

Synthesis of Single‐Component Metal Oxides with Controllable Multi‐Shelled Structure and their Morphology‐Related Applications

“…Interestingly, due to the reductibility of the carbonaceous microspheres inherited from glucose, portion of the CuO transferred into Cu 2 O after the calcination process. The redox reaction between Cu 2+ and glucose is also observed in our previous work when one‐pot hydrothermal method was carried out for the preparation of CuCo 2 O 4 . Metallic copper is detected in the precursors after hydrothermal reaction.…”

“…It has been proved by our previous works that the urchin‐like structure is favorable for better electromagnetic wave absorption performance due to the nanorods around the surface of absorbers can act as isotropic antennas to receive the incident electromagnetic radiation allowing electromagnetic waves to penetrate into the interior of the absorber as much as possible . As mentioned above, when preparing multi‐shelled NiO and Co 3 O 4 , the addition of urea during the adsorption of metal ions can result in the formation of multi‐shelled structure with nanoplate or nanorod outmost shell.…”

Studies on Highly Dense Pure YIG Polycrystalline Ceramics Fabricated by Tape-casting Method

“…should be a constant. [23] In Fig. 7(c), C 0 is nearly constant with little fluctuations at the range of 5~18 GHz, suggesting that the eddy current loss dominates the magnetic loss but also the exchange resonance may exist.…”

Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber

“…The above results jointly veried the elemental composition of the as-synthesized CF@CoFe 2 O 4 @MnO 2 composite. [47][48][49][50] In view of the magnetic loss mechanism of electromagnetic waves, the magnetic behaviors of microwave absorbers have a great effect on their microwave absorbing performance, thus the magnetic hysteresis loops of CoFe 2 O 4 , CF@CoFe 2 O 4 and CF@CoFe 2 O 4 @MnO 2 composites were measured by utilizing VSM and the results are exhibited in Fig. 6.…”