Author/Authors :
Choi، نويسنده , , Moonhee and Cho، نويسنده , , Seungchan and Song، نويسنده , , Yeonghwan and Baek، نويسنده , , Sangmin and Kim، نويسنده , , Hyungkyu and Jung، نويسنده , , Jongsuk Ruth Lee، نويسنده , , Hyunju and Park، نويسنده , , Chansu and Park، نويسنده , , Sungkyun and kim، نويسنده , , Yangdo، نويسنده ,
Abstract :
The hollow BaFe12O19 submicron spheres (HBSSs) for advanced functional magnetic materials were synthesized successfully by self assembly method using diethyleneamine (DEA). The optimized concentration of DEA surfactant was found to be 1.1 mL with pH > 12.2 for the elaborate hollow sphere structure. The coercivity and remanence properties of HBSSs with 500-nm-sized showed 4.2 kOe (iHc) and 2.2 kG (Br), respectively. These results revealed that HBSSs particles were successfully synthesized to submicron size with the quantitative compounding of barium and ferrite precursors.
Keywords :
Hollow sphere , barium ferrite , Self assembly , Hard magnet , DEA
