Hydrothermal synthesis, characterization, and magnetic properties of cobalt chromite nanoparticles

被引：0

作者：

D. Zákutná

A. Repko

I. Matulková

D. Nižňanský

A. Ardu

C. Cannas

A. Mantlíková

J. Vejpravová

机构：

[1] Charles University in Prague,Department of Inorganic Chemistry, Faculty of Science

[2] Institute of Physics of the ASCR,Università di Cagliari, Dipartimento di Scienze Chimiche

[3] v.v.i,undefined

[4] Department of Magnetic Nanosystems,undefined

[5] Complesso,undefined

[6] Universitario di Monserrato,undefined

[7] Institute of Inorganic Chemistry,undefined

[8] ASCR,undefined

来源：

Journal of Nanoparticle Research | 2014年 / 16卷

关键词：

Cobalt chromite; Hydrothermal method; Nanoparticles; Size effect; Multiferroic materials;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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 °C. The obtained nanoparticles were characterized 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.

引用

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