Structural and magnetic properties of P25 TiO2 nanoparticles doped by Co

Morais Lopes, Fernando; Bessergenev, Valentin; J. Lourenço, João Paulo Lourenço; Hantusch, Martin; Burkel, Eberhard; Botelho do Rego, Ana M.; Rajnak, Michal; Timko, Milan; Kopcansky, Peter

http://hdl.handle.net/10400.1/16518

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Autores

Morais Lopes, Fernando

Bessergenev, Valentin

J. Lourenço, João Paulo Lourenço

Hantusch, Martin

Burkel, Eberhard

Botelho do Rego, Ana M.

Rajnak, Michal

Timko, Milan

Kopcansky, Peter

Resumo(s)

The present work reports on the structural and magnetic properties of TiO2 P25 Degussa powder doped with cobalt. Dissolution of cobalt in TiO2 matrix was achieved by precipitation of tris(diethyldithiocarbamato) cobalt (III) (CoDtc - Co[S2CN(C2H5)(2)](3) in chloroform (CHCl3) and consequent thermal treatment. Five different Co atomic percentage contents were chosen, e.g., 0.5%, 1%, 2%, 5% and 10%. It was shown that cobalt atoms are uniformly distributed across TiO2 matrix and exhibit antiferromagnetic interactions at low temperatures.

Palavras-chave

Co-doped P25 Magnetic properties FNR Anatase

URI

http://hdl.handle.net/10400.1/16518

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Editora

Elsevier

DOI

10.1016/j.jmmm.2020.166442

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FCT2-Artigos (em revistas ou actas indexadas)

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