Abstract
Diluted magnetic semiconductor Zn1-xFexO and Zn1-xFexO:Cu crystals were synthesized by hydrothermal method with 3molL-1 KOH as mineralizer, with 35% fill factor, under the reaction temperature of 430℃ for 24h. When Zn(OH)2 doped with FeCl2·6H2O was used as precursor, different shapes of Fe doped ZnO crystals were synthesized, of which the atomic percentage of Fe in the bigger crystals were 0.49%—0.52%. The magnetization of the crystals lowered with increasing temperature, a superconducting quantum interference device (SQUID) was used for measuring magnetism. Compared with Zn1-xFexO crystals the magnetization of Zn1-xFexO:Cu crystals doped with Cu increased obviously in the high temperature region, and at room temperature they were ferromagnetic.
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