dc.contributor.author |
Joseph, N |
|
dc.contributor.author |
Kaipamangalath, A |
|
dc.contributor.author |
Varma, M R |
|
dc.contributor.author |
Thomas, S |
|
dc.date.accessioned |
2022-01-31T04:35:36Z |
|
dc.date.available |
2022-01-31T04:35:36Z |
|
dc.date.issued |
2021 |
|
dc.identifier.citation |
Materials and Manufacturing Processes; 272:124971 |
en_US |
dc.identifier.uri |
https://www.sciencedirect.com/science/article/abs/pii/S0254058421007549#:~:text=BaFe12O19%20(BaM,salt%20assisted%20sol%2Dgel%20technique.&text=Barium%20hexaferrite%20platelets%20of%20width,magnetization%20of%2071%20emu%2Fg. |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/3952 |
|
dc.description.abstract |
BaFe12O19 (BaM) platelets of size ranging from 0.15 to 0.90 μm were synthesized using a salt assisted sol-gel technique. The structural and morphological characteristics of the hexaferrite particles were analyzed using the x-ray diffraction technique and scanning electron microscopy. During the high-temperature calcination process, salts like KCl, KBr, KI, and K2CO3 serve as a matrix for the formation of barium hexaferrite platelets from its precursor mixture, BaCO3, and ϒ-Fe2O3. The salt matrix prevents possible particle coarsening during the high-temperature treatment and promotes the growth of plate-like shaped particles. The width and thickness of hexaferrite platelets increase with a decrease in the melting temperature of potassium halide salts. The coercivity at 300 K of the barium hexaferrite particles was analyzed as a function of the lateral dimension of platelets. Barium hexaferrite platelets of width ~0.20 μm yielded a coercivity as high as 4.6 kOe and magnetization of 71 emu/g. The outlined synthesis route is suitable for realizing isolated hard ferrite platelets with improved intrinsic coercivity. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Elsevier |
en_US |
dc.subject |
barium hexaferrite |
en_US |
dc.subject |
nano platelets |
en_US |
dc.subject |
permanent magnets |
en_US |
dc.subject |
salt-assisted sol-gel synthesis |
en_US |
dc.title |
Size Controlled Growth of Barium Hexaferrite Platelets using Salt Assisted Sol-gel Technique |
en_US |
dc.type |
Article |
en_US |