Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Influence of Ni-Cr substitution on the magnetic and electric properties of magnesium ferrite nanomaterials

Iqbal, Muhammad Javed, Ahmad, Zahoor, Meydan, Turgut and Nlebedim, Cajetan Ikenna 2012. Influence of Ni-Cr substitution on the magnetic and electric properties of magnesium ferrite nanomaterials. Materials Research Bulletin 47 (2) , pp. 344-351. 10.1016/j.materresbull.2011.11.011

Full text not available from this repository.

Abstract

The effect of variation of composition on the structural, morphological, magnetic and electric properties of Mg1−xNixCrxFe2−xO4 (x = 0.0–0.5) nanocrystallites is presented. The samples were prepared by novel polyethylene glycol (PEG) assisted microemulsion method with average crystallite size of 15–47 nm. The microstructure, chemical, and phase analyses of the samples were studied by the scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X-ray fluorescence (ED-XRF), and X-ray diffraction (XRD). Compositional variation greatly affected the magnetic and structural properties. The high-field regimes of the magnetic loops are modelled using the Law of Approach (LOA) to saturation in order to extract information about their anisotropy and the saturation magnetization. Thermal demagnetization measurements are carried out using VSM and significant enhancement of the Curie temperature from 681 K to 832 K has been achieved by substitution of different contents of Ni–Cr. The dc-electrical resistivity (ρRT) at potential operational range around 300 K is increased from 7.5 × 108 to 4.85 × 109 Ωcm with the increase in Ni–Cr contents. Moreover, the results of the present study provide sufficient evidence to show that the electric and magnetic properties of Mg-ferrite have been improved significantly by substituting low contents of Ni–Cr.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Nanostructures; Chemical synthesis; Mössbauer spectroscopy; Electrical properties; Magnetic properties
Publisher: Elsevier
ISSN: 0025-5408
Last Modified: 10 Jan 2018 07:30
URI: http://orca.cf.ac.uk/id/eprint/17068

Citation Data

Cited 3 times in Google Scholar. View in Google Scholar

Cited 10 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item