Synthesis and optimization of the magnetic properties of aligned strontium ferrite nanowires
Abstract
Highlights: • Dip coating method was used to synthesize strontium ferrite nanowires in template. • Size of nanowires was controlled via anodization parameters. • Fe/Sr ratio was optimized in precursor. • Magnetic properties of nanowires and nanopowders were compared. - Abstract: High aspect ratio strontium hexaferrite nanowires were fabricated by dip coating in alumina template. Fe/Sr ratio was changed from 10 to 12 in precursor, and the samples were annealed at a range of temperatures 500–900 °C in order to optimize the magnetic properties of strontium ferrite in the form of nanowires. Field emission scanning electron microscope (FESEM) proved the formation of nanowires in the templates, while TEM images revealed a high degree of crystallinity. The ferrites were further characterized by X-ray diffraction (XRD) and energy dispersive X-ray spectrometer (EDS). Magnetic properties of the specimens were studied by a SQUID at 10–300 K. The results showed that the coercivity of packed density nanowires in the template was much less than that of the nanopowders. On the other hand, the coercivity of nanowires at ambient temperature was less than low temperature coercivity.
- Authors:
-
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111 (Iran, Islamic Republic of)
- Department of Materials Engineering, Malek Ashtar University of Technology, Shahin shahr (Iran, Islamic Republic of)
- Publication Date:
- OSTI Identifier:
- 22581501
- Resource Type:
- Journal Article
- Journal Name:
- Materials Research Bulletin
- Additional Journal Information:
- Journal Volume: 76; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; ALUMINIUM OXIDES; ANODIZATION; COERCIVE FORCE; COMPARATIVE EVALUATIONS; DIP COATING; FERRATES; FIELD EMISSION; MAGNETIC PROPERTIES; NANOWIRES; POWDERS; SCANNING ELECTRON MICROSCOPY; SOL-GEL PROCESS; SQUID DEVICES; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY
Citation Formats
Ebrahimi, Fatemeh, Bakhshi, Saeed Reza, Ashrafizadeh, Fakhreddin, and Ghasemi, Ali. Synthesis and optimization of the magnetic properties of aligned strontium ferrite nanowires. United States: N. p., 2016.
Web. doi:10.1016/J.MATERRESBULL.2015.11.061.
Ebrahimi, Fatemeh, Bakhshi, Saeed Reza, Ashrafizadeh, Fakhreddin, & Ghasemi, Ali. Synthesis and optimization of the magnetic properties of aligned strontium ferrite nanowires. United States. https://doi.org/10.1016/J.MATERRESBULL.2015.11.061
Ebrahimi, Fatemeh, Bakhshi, Saeed Reza, Ashrafizadeh, Fakhreddin, and Ghasemi, Ali. 2016.
"Synthesis and optimization of the magnetic properties of aligned strontium ferrite nanowires". United States. https://doi.org/10.1016/J.MATERRESBULL.2015.11.061.
@article{osti_22581501,
title = {Synthesis and optimization of the magnetic properties of aligned strontium ferrite nanowires},
author = {Ebrahimi, Fatemeh and Bakhshi, Saeed Reza and Ashrafizadeh, Fakhreddin and Ghasemi, Ali},
abstractNote = {Highlights: • Dip coating method was used to synthesize strontium ferrite nanowires in template. • Size of nanowires was controlled via anodization parameters. • Fe/Sr ratio was optimized in precursor. • Magnetic properties of nanowires and nanopowders were compared. - Abstract: High aspect ratio strontium hexaferrite nanowires were fabricated by dip coating in alumina template. Fe/Sr ratio was changed from 10 to 12 in precursor, and the samples were annealed at a range of temperatures 500–900 °C in order to optimize the magnetic properties of strontium ferrite in the form of nanowires. Field emission scanning electron microscope (FESEM) proved the formation of nanowires in the templates, while TEM images revealed a high degree of crystallinity. The ferrites were further characterized by X-ray diffraction (XRD) and energy dispersive X-ray spectrometer (EDS). Magnetic properties of the specimens were studied by a SQUID at 10–300 K. The results showed that the coercivity of packed density nanowires in the template was much less than that of the nanopowders. On the other hand, the coercivity of nanowires at ambient temperature was less than low temperature coercivity.},
doi = {10.1016/J.MATERRESBULL.2015.11.061},
url = {https://www.osti.gov/biblio/22581501},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 76,
place = {United States},
year = {Fri Apr 15 00:00:00 EDT 2016},
month = {Fri Apr 15 00:00:00 EDT 2016}
}