Synthesis and Characterization of Co-Doped ZnO Nanocompound

Author

Carrero, A. ; Sagredo, Vicente ; Pernechele, C. ; Rossi, Francesco

Author_Institution

Phys. Dept., Univ. de Los Andes, Merida, Venezuela

Volume

49

Issue

8

fYear

2013

fDate

Aug. 2013

Firstpage

4614

Lastpage

4617

Abstract

Zn_1-xCo_xO (x=5%) nanopowders were prepared by using the autocombustion technique, and the structural, optical and magnetic properties were investigated. X-ray diffraction measurements show that the synthesized samples have a wurtzite structure. The formation of the wurtzite structure in Co doped ZnO nanoparticles was further confirmed by Fourier transform infra-red spectrometry. Optical absorption spectra show that the band energy of Zn_0.95Co_0.05O powders is about 2.42 eV at room temperature. Magnetic data obtained from as grown powders indicate the presence of antiferromagnetic interactions between particles.

Keywords

Fourier transform spectra; II-VI semiconductors; X-ray diffraction; antiferromagnetic materials; cobalt compounds; combustion synthesis; energy gap; infrared spectra; magnetic particles; nanofabrication; nanomagnetics; nanoparticles; semiconductor growth; semimagnetic semiconductors; wide band gap semiconductors; zinc compounds; Co-doped nanocompound; Fourier transform infrared spectrometry; X-ray diffraction; Zn_1-xCo_xO; antiferromagnetic interactions; autocombustion; band energy; magnetic properties; nanoparticles; nanopowders; optical absorption spectra; optical properties; structural properties; temperature 293 K to 298 K; wurtzite structure; Absorption; Magnetic semiconductors; Nanoparticles; Powders; Temperature measurement; Zinc oxide; Antiferromagnetism; Curie-Weiss law; diluted magnetic semiconductors; nanoparticles;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2260857

Filename

6566129