Dielectric, magnetic, and microwave absorption properties of polyoxometalate-based materials

Abstract The dielectric and microwave absorption properties are very important for many civil and military applications. In this study, we report the microwave absorbing properties of hexamolybdate (nBu4N)2[Mo6O19] clusters before and after a hydrogenation process. The pristine hexamolybdate cluster shows minimal microwave reflection loss (RL) due to its highly symmetric structure, while it displays unusually broad and high RL with a maximum RL value of -41.92 dB centering at 15.25 GHz after being subjected to a hydrogenation process, demonstrating promising prospects as a new microwave absorbing material.