Title :
Preparation of ultra-fine Ba0.5Sr0.5Fe12O19 nanopowders derived from chemical co-precipitation method
Author :
Wu, Ze ; Zhang, Junli ; Bashkirov, L.A. ; Dong, Limin ; Han, Zhidong ; Zhang, Xianyou
Author_Institution :
College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin China
Abstract :
Ultra-fine Ba0.5Sr0.5Fe12O19 nanopowders have been successfully synthesized by chemical co-precipitation method. The thermal properties of the samples were measured using DTA/TG. The phase of the powder was observed by X-ray diffraction (XRD), and the microstructure of the sample was observed by scanning electron microscope (SEM). The effects of pH value, Fe/Ba molar ratio, holding time, and calcination temperature on the structures and morphologies of the resultant products were investigated. The results indicated that the Ba0.5Sr0.5Fe12O19 powder with a single phase can be synthesized successfully at 1000 °C for 2 h. And the products have an ultrafine particle size of 100-200 nm with a granular particle shape.
Keywords :
X-ray diffraction; barium compounds; calcination; ceramics; differential thermal analysis; ferrites; magnetic particles; nanofabrication; nanomagnetics; nanoparticles; pH; particle size; precipitation (physical chemistry); scanning electron microscopy; strontium compounds; Ba0.5Sr0.5Fe12O19; DTA-TGA; SEM; X-ray diffraction; XRD; calcination temperature; ceramics; chemical coprecipitation method; differential thermal analysis-thermogravimetry; granular particle shape; holding time; magnetic properties; microstructure; molar ratio; morphology; pH; scanning electron microscopy; size 100 nm to 200 nm; temperature 1000 degC; thermal properties; time 2 hr; ultrafine nanopowders; ultrafine particle size; Barium; Calcination; Chemicals; Ferrites; Iron; Powders; X-ray scattering; Ba0.5Sr0.5Fe12O19; co-precipitation; morphologies; nanopowders;
Conference_Titel :
Strategic Technology (IFOST), 2012 7th International Forum on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1772-6
DOI :
10.1109/IFOST.2012.6357564
