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 |
|---|---|
| Pages (from-to) | 27-32 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 494 |
| Publication status | Published - 1997 Dec 1 |
| Event | Proceedings of the 1997 Fall MRS Symposium - Boston, MA, USA Duration: 1997 Dec 1 → 1997 Dec 4 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
}
Microstructural aspects of nanocrystalline LiZn ferrites densified with chemically derived additives. / Cho, Yong Soo; Burdick, Vernon L.; Amarakoon, Vasantha R.W.; Underhill, Elijah; Brissette, Leo.
In: Materials Research Society Symposium - Proceedings, Vol. 494, 01.12.1997, p. 27-32.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Microstructural aspects of nanocrystalline LiZn ferrites densified with chemically derived additives
AU - Cho, Yong Soo
AU - Burdick, Vernon L.
AU - Amarakoon, Vasantha R.W.
AU - Underhill, Elijah
AU - Brissette, Leo
PY - 1997/12/1
Y1 - 1997/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0031380165&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031380165&partnerID=8YFLogxK
M3 - Conference article
VL - 494
SP - 27
EP - 32
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
SN - 0272-9172
ER -