Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/40008
Título: | A systematic study of the structural and magnetic properties of Mn-, Co-, and Ni-Doped Colloidal Fe3O4 nanoparticles |
Autor(es): | Kolen’ko, Yury V. Bañobre-López, Manuel Deepak, Francis Leonard Carbó-Argibay, Enrique Rodríguez-Abreu, Carlos Cerqueira, M. F. Piñeiro-Redondo, Yolanda Kamali, Saeed Kovnir, Kirill Rivas, José |
Palavras-chave: | Magnetic properties Nanoparticles Doping |
Data: | 2015 |
Editora: | ACS Publications |
Revista: | Journal of Physical Chemistry C |
Citação: | Deepak, F. L., Banobre-Lopez, M., Carbo-Argibay, E., Fatima Cerqueira, M., Pineiro-Redondo, Y., Rivas, J., . . . Kolen'ko, Y. V. (2015). A Systematic Study of the Structural and Magnetic Properties of Mn-, Co-, and Ni-Doped Colloidal Magnetite Nanoparticles. Journal of Physical Chemistry C, 119(21), 11947-11957. doi: 10.1021/acs.jpcc.5b01575 |
Resumo(s): | A series of colloidal MxFe3-xO4 (M = Mn, Co, Ni; x = 0–1) nanoparticles with diameters ranging from 6.8 to 11.6 nm was synthesized by hydrothermal reaction in aqueous medium at low temperature (200 °C). Energy-dispersive X-ray microa-nalysis and inductively coupled plasma spectrometry confirms that the actual elemental compositions agree well with the nominal ones. The structural properties of obtained nanoparticles were investigated by using powder X-ray diffraction, Raman scattering, Mössbauer spectroscopy, and electron microscopy. The results demonstrate that our synthesis technique leads to the formation of chemically uniform single-phase solid solution nanoparticles with cubic spinel structure, confirming the intrinsic doping. Magnetic studies showed that, in comparison to Fe3O4, the saturation magnetization of MxFe3-xO4 (M = Mn, Ni) decreases with increasing dopant concentration, while Co-doped samples showed similar saturation magnetizations. On other hand, whereas Mn- and Ni-doped nanoparticles exhibits superparamagnetic behavior at room temperature, ferromagnetism emerges for CoxFe3-xO4 nanoparticles, which can be tuned by the level of Co doping. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/40008 |
DOI: | 10.1021/acs.jpcc.5b01575 |
ISSN: | 1932-7447 |
Versão da editora: | http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b01575 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Asystematic-REpositopriUM1.pdf Acesso restrito! | 1,35 MB | Adobe PDF | Ver/Abrir |