Structural, optical, XPS and magnetic properties of Zn particles capped by ZnO nanoparticles

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URI: http://hdl.handle.net/10498/35262

DOI: 10.1016/j.jallcom.2015.01.285

ISSN: 0925-8388

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Autor/es
Belousova, Olga V.; Ortega Ponce, DanielAutoridad UCA; Mafina, M. K.; Morozov, Iu. G.; Kuznetsov, Maxim V.
Fecha
2015-02-11
Departamento/s
Física de la Materia Condensada
Fuente
Journal of Alloys and Compounds, Vol. 633 (2015) pp. 237-245
Resumen
Spherical zinc particles ranging from 42 to 760 nm in average size and capped with plate-like zinc oxide particles of 10–30 nm in sizes have been prepared by levitation-jet aerosol synthesis through condensation of zinc vapor in an inert/oxidizer gas flow. The nanoparticles have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), BET measurements, ultra violet visible (UV–vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, X-ray electron spectroscopy (XPS), superconducting quantum interference device (SQUID), and vibrating-sample magnetometer (VSM). Magnetic and XRD data indicate that the observed ferromagnetic ordering related to the changes in unit-cell volume of Zn in the Zn/ZnO interface of the nanoparticles. These results are in good correlation with the optical measurements data.
Materias
Zn; ZnO; nanoparticles
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