Abstract
Densification behavior and microstructural characteristics of nanocrystalline LiZn ferrites with chemically derived additives were investigated. Nanocrystalline Li0.3Zn0.4Fe2.3O4 powders having a ≈15 nm size were prepared at a low temperature of 450 °C by a chemical synthesis using a combustible polyacrylic acid (PAA). Small amounts of Si, Ca and Mn were incorporated into the nanocrystalline ferrites via sol-gel reactions utilizing tetraethyl orthosilicate, calcium isopropoxide and manganese acetate. This process was believed to give a homogeneous distribution of the additives over the nanocrystalline ferrites. A uniform microstructure was obtained without any evidence of exaggerated grain growth after sintering at 1100 °C. Saturation magnetization and coercive force were found to increase with the chemical additives. The results were compared with those of the same composition, but processed by the conventional batch-mixing of corresponding oxide additives.
Original language | English |
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Pages (from-to) | 27-32 |
Number of pages | 6 |
Journal | Materials Research Society Symposium - Proceedings |
Volume | 494 |
DOIs | |
Publication status | Published - 1997 |
Event | Proceedings of the 1997 Fall MRS Symposium - Boston, MA, USA Duration: 1997 Dec 1 → 1997 Dec 4 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering