Journal
JOURNAL OF APPLIED PHYSICS
Volume 97, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1855615
Keywords
-
Categories
Ask authors/readers for more resources
An iron oxide/silica composite material, which was prepared by combining reverse-micelle and sol-gel techniques, exhibited a huge coercive field H-c of 20 kOe (1.6 X 10(5) Am-1) in our previous work. The key of this synthetic procedure was the added Ba2+ ions that created a single phase of epsilon-Fe2O3. In the present work, the addition effect of Ca2+ ions to this procedure was investigated. Consequently, rod-shape epsilon-Fe2O3 nanocrystals (40-120 nm X 15-20 nm) were obtained and a H-c value of 20 kOe was observed. Thermodynamical analysis that considered the surface energy of nanoparticle suggested that a single epsilon-Fe2O3 Phase was generated by retarding the crystal growth of Fe2O3 particles under the presence of alkaline earth ions. (c) 2005 American Institute of Physics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available