Abstract
In the present work, pure and Sr2+ ions substituted Mg ferrite nanoparticles (NPs) had been prepared by co-precipitation method and their structural, optical, and magnetic properties at different calcination temperatures were studied. On this purpose, thermo gravimetric and differential thermal analysis (TG–DTA), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy, UV–Visible diffused reflectance spectroscopy, impedance spectroscopy, and vibrating sample magnetometer were carried out. The exo- and endothermic processes of synthesized precursors were investigated by TG–DTA measurements. The structural properties of the obtained products were examined by XRD analysis and show that the synthesized NPs are in the cubic spinel structure. The existence of two bands around 578–583 and 430–436 cm−1 in FT-IR spectrum also confirmed the formation of spinel-structured ferrite NPs. The lattice constants and particle size are estimated using XRD data and found to be strongly dependent on calcination temperatures. The optical, electrical, and magnetic properties of ferrite compositions also investigated and found to be strongly dependant on calcination temperatures.
Highlights
In the vast application of nanomaterials, the sizes of magnetic and electronic devices are reduced greatly in the recent year
The pure and Sr2? substituted magnesium ferrite NPs were successfully prepared by co-precipitation methods and their structural, morphological, optical, and electrical properties were studied with different calcination temperatures
Fourier transform infrared spectroscopy (FT-IR) study revealed the formation of spinel ferrite structure with two strong peaks at around 575–583 and 432–438 cm-1, respectively
Summary
In the vast application of nanomaterials, the sizes of magnetic and electronic devices are reduced greatly in the recent year. Spinel ferrite nanomaterials are regarded as one of the most important inorganic nanomaterials because of their improved electrical (Rane et al 2001), magnetic (Kotnala et al 2009), and catalytic properties (Srivastava et al 2009), respectively. Their physical and chemical properties of spinel ferrites are different from their corresponding bulk materials due to their higher surface to volume ratio (Naseri et al 2011). The structural, electrical, chemical, and magnetic properties of metal ferrites strongly depend upon the nature of the ions and their distribution among the A- and B-sites, respectively (Baykal et al 2008). High electrical resistance and lower saturation magnetization makes them suitable for magnetic and magneto-optical
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
