Fabrication of Mn Zn FeO ferrofluids from natural sand for magnetic sensors and radar absorbing materials.

Mn Zn FeO ferrofluids were produced from natural sand for magnetic sensors and radar absorbing materials. The X-ray diffraction data showed that the Zn partially substituted the Mn and Fe ions to construct a spinel structure. The increasing Zn composition decreased the lattice parameters of the structure.