Microwave absorption properties of CeO2 and Zn-modified CeO2 microstructures

► Morphology-controlled CeZn and CeO2 were synthesized by a facial method. ► Microwave-absorbing properties of CeZn and CeO2 were firstly investigated. ► A minimal RL of −34 dB was obtained for CeZn solid with 2.0 mm thickness layer. ► This could be attributed to their unique structure properties and geometric effects.