Origin of high-temperature ferromagnetism in Zn 0.98Fe 0.02O alloys prepared by hydrothermal method

Abstract

Zn 0.98Fe 0.02O alloys were prepared by the hydrothermal method. X-ray diffraction had not found any peak from secondary phase. The alloy showed ferromagnetism with a high Curie temperature. Detailed microscope analysis showed that there existed secondary phase with spinel structure. Further analysis proved that the inhomogeneity, ZnFe 2O 4, is the origin of ferromagnetism in the Zn 0.98Fe 0.02O alloys.