The structure and magnetic properties of Zn0.99Fe0.01O synthesized under high pressure

► A series of Zn0.99Fe0.01O bulk samples were prepared using different pressure. ► The lattice constants of the samples decrease with the increase of pressure. ► The particle size increases markedly with the increase of pressure. ► All samples present ferromagnetic behaviors at room temperature. ► The pressure causes an enhanced ferromagnetism.