| Autor: |
Caruntu, Gabriel, Bush, Gary G., O'Connor, Charles J. |
| Zdroj: |
Journal of Materials Chemistry; 2004, Vol. 14 Issue: 18 p2753-2759, 7p |
| Abstrakt: |
We report on the synthesis of highly uniform, single phase zinc ferrite films prepared through a single step low temperature reaction by the liquid phase deposition (LPD) method. X-ray diffraction, TGA and EDX measurements support the assumption that the as-deposited films are constituted from a mixture of crystallized FeOOH and amorphous Zn(OH)2. Upon heat treatment in air at 600 °C for one hour the intermediates are subsequently converted into the corresponding zinc ferrites. The films with adjustable chemical compositions are identified as having a spinel-type crystal structure and present a spherical or rod-like microstructure, depending on the Zn content. The magnetic films present a superparamagnetic behavior above blocking temperatures which decrease with increasing Zn content, and are ferromagnetic at 5 K with coercivities ranging between 797.8 and 948.5 Oe. |
| Databáze: |
Supplemental Index |
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