In:
Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 29, No. 33 ( 2015-12-10), p. 1550213-
Abstract:
Impurities free ferromagnetic [Formula: see text] was prepared via sol–gel auto-combustion method and then gold was doped with various concentrations 1, 3 and 5 wt.% using conventional deposition–precipitation method. All samples of [Formula: see text] with/without Au doping were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The room temperature magnetic hysteresis loops of all the samples were measured using a physical property measuring system (PPMS), and the results showed a ferromagnetic behavior at room temperature. The results obtained confirmed the fabrication of magnetite–gold composite nanoparticles. The results showed that the resistance and the magnetic behavior of the samples decrease sharply with the increase of Au concentration indicating semiconducting behavior. The saturation magnetization [Formula: see text] of the bare [Formula: see text] sample (94.72 emu/g) is much higher than that (66.78 emu/g) of the 5 wt.% Au-doped [Formula: see text] sample.
Type of Medium:
Online Resource
ISSN:
0217-9849
,
1793-6640
DOI:
10.1142/S0217984915502139
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2015
detail.hit.zdb_id:
896450-6
detail.hit.zdb_id:
2038670-9
