Počet záznamů: 1
Hydrothermal synthesis, characterization, and magneticproperties of cobalt chromite nanoparticles
- 1. 0433893 - FZU-D 2015 RIV NL eng J - Článek v odborném periodiku
Zákutná, Dominika - Repko, A. - Matulková, I. - Nižňanský, Daniel - Ardu, A. - Cannas, C. - Mantlíková, Alice - Vejpravová, Jana
Hydrothermal synthesis, characterization, and magneticproperties of cobalt chromite nanoparticles.
Journal of Nanoparticle Research. Roč. 16, č. 2 (2014), 1-14. ISSN 1388-0764
Grant CEP: GA ČR GAP108/10/1250
Institucionální podpora: RVO:68378271 ; RVO:61388980
Klíčová slova: cobalt chromite * hydrothermal method * nanoparticles * size effect * multiferroic materials
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.184, rok: 2014
The CoCr2O4 nanoparticles were prepared by hydrothermal treatment of chromium and cobalt oleates in a mixture of solvents (water and ethanol or pentanol) at various temperatures. The samples were further annealed at the temperatures from 300 to 500 oC. The obtained nanoparticles were character ized using powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), high-resolution TEM, scanning electron microscopy, thermogravimetric analysis, Raman and infrared spectroscopy, and magnetic measurements. The particle size, ranging from 4.4 to 11.5 nm, was determined from the TEM and PXRD methods. The tendency of particles to form the aggregates with the increasing annealing temperature has been observed. The magnetic measurements revealed that the typical features of the CoCr2O4 long-range magnetic order are suppressed in the nanoparticles.
Trvalý link: http://hdl.handle.net/11104/0238059