Structural characteristics of M-type Ba-Sr hexaferrite nanoparticles prepared using sol-gel method: role of the Srion concentrations and annealing temperatures
Main Article Content
Abstract
Strontium substituted M-type Barium hexagonal ferrite Ba1-xSrxFe12O19 (x= 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) has
been synthesized via Sol-gel autocombustion method. This method has the potential to produce nanoparticle
materials at low temperatures. The thermal decomposition of the autocombustion product verified by
thermogravimetric (TGA) and differential thermal analysis (DTA). To obtain the hexagonal ferrite phase, the
required annealing temperature estimated by TGA analysis. The fine powders produced by autocombustion at
different temperatures (400, 600, and 800 ⁰C) were annealed for three hours. The influence of annealing
temperature on the structural characteristics of Ba-Sr ferrite was investigate in detail by using XRD, and SEM.
The XRD results showed that increasing the annealing temperature leads to a decrease in the proportion of the
intermediate phase such as γ-Fe2O3, α-Fe2O3, and BaFe2O4 phases, while increasing the phase ratio of ferrite
BaFe12O19. Whereas the ferrite phase, BaFe12O19, increases and exists as the single-phase at a temperature above
800 ⁰C. The average crystallite size calculated from Debye-Scherer's law lies in the range of (27-46 nm). While
Lattice parameters of Ba-Sr ferrite found to increase linearly with increasing Sr-ion content, whereas the particle
size estimated from SEM it found to increase with increasing Sr-ion concentration in the range of (27-48nm).
Downloads
Metrics
Article Details
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
