Ethylene glycol assisted spray pyrolysis for the synthesis of hollow BaFe12O19 spheres

Journal Article · Wed Apr 01 00:00:00 EDT 2015 · Materials Letters

DOI:https://doi.org/10.1016/j.matlet.2015.01.034· OSTI ID:1211083

Xu, X; Park, J; Hong, YK; Lane, AM

Hollow spherical BaFe12O19 particles were synthesized by spray pyrolysis from a solution containing ethylene glycol (EG) and precursors at 1000 degrees C. The effects of EG concentration on particle morphology, crystallinity and magnetic properties were investigated. The hollow spherical particles were found to consist of primary particles, and higher EG concentration led to a bigger primary particle size. EG concentration did not show much effect on the hollow particle size. Better crystallinity and higher magnetic coercivity were obtained with higher EG concentration, which is attributed to further crystallization with the heat produced from EG combustion. Saturation magnetization (emu/g) decreased with increasing EG concentration due to residual carbon from EG incomplete combustion, contributing as a non-magnetic phase to the particles. Published by Elsevier B.V.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: AR0000189
• OSTI ID: 1211083
• Journal Information: Materials Letters, Journal Name: Materials Letters Vol. 144; ISSN 0167-577X
• Country of Publication: United States
• Language: English