%0 Journal Article
%A Quesada, A.
%A García, M. A.
%A Andrés, M.
%A Hernando Grande, Antonio
%A Fernández, J. F.
%A Caballero, A. C.
%A Martín González, M. S.
%A Briones, F.
%T Ferromagnetism in bulk Co-Zn-O
%D 2006
%@ 0021-8979
%U https://hdl.handle.net/20.500.14352/52090
%X The origin of ferromagnetism in diluted magnetic semiconductors is still an open question, yielding a great deal of research across the world. This work focuses on the Co-Zn-O system. Room-temperature ferromagnetism is observed after a partial reaction of Co_3O_4 and ZnO, which can be ascribed neither to carrier mediation nor segregated cobalt metallic clusters. Another mechanism is yielding room-temperature ferromagnetism. This mechanism is associated with a partial reaction of ZnO and Co_3O_4 grains, and always appears when the starting phases (Co_3O_4 and ZnO) are present in the sample, suggesting that interfaces are involved in the origin of the observed ferromagnetism.
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