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Morphology and magnetic properties of SrFe12O19 synthesized with oxidized scale.
- Source :
-
Materials Letters . Feb2016, Vol. 164, p579-582. 4p. - Publication Year :
- 2016
-
Abstract
- A series of Strontium hexaferrite (SrFe 12 O 19 ) were successfully synthesized at 1100 °C for 2 h by the molten-salt synthesis method using SrCO 3 and oxidized scale as raw materials. The characteristics morphology and magnetic properties of as-prepared SrFe 12 O 19 powders in different eutectic molten salt mixtures were discussed. The morphology feature has an important influence on magnetic properties of SrFe 12 O 19 , in particular of the coercivity. Because the basal plane of M-type strontium hexaferrite is easily magnetized, the obtained samples of platelet-shaped with large ratio of width to thickness in KCl–Na 2 SO 4 and KCl–K 2 SO 4 molten salts display a low coercivity which is 2862 Oe and 2687 Oe, respectively. The H c , M s , M r and (BH) max of the obtained SrFe 12 O 19 with irregular elliptical shape in NaCl–KCl molten salt are 4043 Oe, 60.77 emu/g, 33.75 emu/g, 0.61 MG Oe. The multi-domain structure of all samples may cause the coercivity lower than the theoretical value. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 164
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 111419055
- Full Text :
- https://doi.org/10.1016/j.matlet.2015.11.026