Improved magnetic and dielectric behavior of Al-Cr substituted SrFe12O19 nano hexaferrite

Using the sol–gel auto-combustion approach, strontium hexaferrite (SrFe 12- x - y Al x Cr y O 19 where x  =  y  = 0.0, 0.05, 0.1, 0.15 and 0.2) with an Al-Cr substitution has been synthesized and characterization of the structural, magnetic, and dielectric properties were carried out. Analytical exp...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2023-12, Vol.129 (12), Article 865
Main Authors: Mammo, Tulu Wegayehu, Murali, N., Shanmukhi, P. S. V., Kiran, M. Gnana, Parajuli, D., Rao, G. M., Batoo, Khalid Mujasam, Hussain, Sajjad
Format: Article
Language:English
Subjects:
Applied physics
Characterization and Evaluation of Materials
Chromium
Coercivity
Condensed Matter Physics
Dielectric properties
Fourier transforms
Infrared spectroscopy
Machines
Magnetic devices
Magnetic properties
Manufacturing
Materials science
Materials substitution
Nanotechnology
Optical and Electronic Materials
Permittivity
Physics
Physics and Astronomy
Processes
Sol-gel processes
Structural analysis
Surfaces and Interfaces
Synthesis
Thin Films
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Summary:Using the sol–gel auto-combustion approach, strontium hexaferrite (SrFe 12- x - y Al x Cr y O 19 where x  =  y  = 0.0, 0.05, 0.1, 0.15 and 0.2) with an Al-Cr substitution has been synthesized and characterization of the structural, magnetic, and dielectric properties were carried out. Analytical experimentations were made using X-ray diffraction (XRD), scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), and dielectric techniques to determine the samples’ structural, magnetic, and dielectric constant features. The anticipated single-phased materials were obtained using a smooth and controlled experimental procedures. The tuned values of the dopant levels resulted in a higher value of magnetic coercivity, which is applicable in ample magnetic devices. With the replacement of Al-Cr, the values of the dielectric constant ( ε ) and tanδ dropped. Synthesized samples in the present research exhibit low values of dielectric constant ε  = 6053.26 (for x  = 0.0), as well as loss tan δ  = 2.7 (for x  = 0.2), respectively. These materials are appropriate for application in microwave devices.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-023-07157-0