Abstract
This paper reports room-temperature ferromagnetism in Co- and Cu-doped In 2 O 3 samples synthesized by a solid-state reaction method. Structure and composition analyses revealed that Co and Cu were incorporated into the In 2 O 3 lattices. Photoluminescence measurement revealed an additional emission at 520 nm from these doped samples. The magnetic measurement showed that additional Cu doping greatly enhanced the ferromagnetism of In 1.99 Co 0.01 O 3 bulk samples. The implication of the effects of additional Cu doping is also discussed.
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