Nanospheres of silica with an epsilon-Fe2O3 single crystal nucleus.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 19824669.
- Also identified by DOI 10.1021/nn901022s.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
A route to produce single crystals of epsilon-Fe(2)O(3) individually wrapped in a silica shell is presented. Formation of epsilon-Fe(2)O(3)/silica nanospheres was achieved by controlled recrystallization of maghemite particles confined in silica shells via calcination in air. Phase transition was monitored by X-ray diffraction, magnetometry, and transmission electron microscopy. Core-shell nanocomposite particles can be dispersed as a colloidal suspension in several polar liquids enlarging the processability spectrum of the material and thus facilitating the use of epsilon-Fe(2)O(3) in technological applications and its integration in devices.