access icon free Preparation of modified SrAl1.3Fe10.7O19 nanostructures and evaluation of size influence on its optical and magnetic properties

© The Institution of Engineering and Technology
Received 04/03/2020, Accepted 08/07/2020, Revised 02/06/2020, Published 23/09/2020

Modifying the morphology of nanostructures and its influence on the features of the tailored nanoparticles (NPs) has attracted a great deal of interest. In this research, the morphological effect on magnetic properties of the bare or modified NPs was investigated. Bare NPs were fabricated by the sol–gel route and modified NPs were prepared using hydrophilic absorbent cotton (HAC) to architect morphology of the NPs. X-ray diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier transform infrared analyses confirmed that pure SrAl1.3Fe10.7O19 NPs were synthesised based on the modified sol–gel method. Results indicated that HAC as a novel and affordable template modified the shape of the NPs. The obtained results by the diffuse reflection spectroscopy suggest that the optical performance of the NPs can be tuned by modifying the size of them. Additionally, the hysteresis loops of the vibrating sample magnetometer attested that the saturation magnetisation (M s) of the modified NPs was elevated.

Inspec keywords: field emission scanning electron microscopy; aluminium compounds; particle size; nanomagnetics; ferrites; strontium compounds; X-ray chemical analysis; transmission electron microscopy; saturation magnetisation; ultraviolet spectra; nanoparticles; nanofabrication; reflectivity; crystal morphology; sol-gel processing; magnetometry; X-ray diffraction; visible spectra

Other keywords: Fourier transform infrared spectra; hydrophilic absorbent cotton; vibrating sample magnetometry; field emission scanning electron microscopy; UV-Vis light absorption spectra; nanoparticles; saturation magnetisation; HAC; magnetic hysteresis loops; particle size; optical properties; X-ray diffraction; energy-dispersive X-ray spectroscopy; modified sol–gel method; SrAl1.3Fe10.7O9; nanostructure morphology; diffuse reflection spectroscopy

Subjects: Optical constants and parameters (condensed matter); Crystal morphology and orientation; Nanofabrication using thin film deposition methods; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Magnetic properties of nanostructures; Magnetization curves, hysteresis, Barkhausen and related effects; Electromagnetic radiation spectrometry (chemical analysis); Ferrimagnetics; Amorphous and nanostructured magnetic materials; Infrared and Raman spectra in inorganic crystals; Deposition from liquid phases (melts and solutions); Visible and ultraviolet spectra of other nonmetals; Optical properties of other inorganic semiconductors and insulators (thin films, low-dimensional and nanoscale structures)

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2020.0134
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