Hyperfine interactions in (CuFe2O4)1 − x (SnO2) x (x = 0, 1, 5, 10 and 20 wt.%) nanocomposites studied by Mössbauer spectroscopy

Abstract

A series of (CuFe 2 O 4 ) 1−x (SnO 2 ) x nanocomposites (x = 0, 1, 5, 10, 20 wt.%) have been prepared by urea-nitrate combustion method. The room temperature Mössbauer spectra of CuFe 2 O 4 and (CuFe 2 O 4 ) 0.99 (SnO 2 ) 0.01 contained two sextets while remaining samples contained at least four sextets with additional doublet indicating the presence of paramagnetic phase. The variations of isomer shift, quadruple splitting and magnetic hyperfine field values were found with the addition of SnO 2 .

Study of CuFe2O4–SnO2 nanocomposites by Mössbauer spectroscopy with high velocity resolution

“…However, there were no studies of nanocomposites on the basis of CuFe 2 O 4 by Mössbauer spectroscopy while nanocomposites on the bases of other ferrites were investigated by this technique. Recently we have compared samples of (CuFe 2 O 4 ) 1−x (SnO 2 ) x nanocomposites (x = 0, 1, 5, 10, 20 wt.%) by Mössbauer spectroscopy with spectra measurement for presentation in 512 channels [9,10]. However, an increase possibility of Mössbauer spectroscopy with high velocity resolution was recently shown [11].…”