| Title |
Magnetic Properties of Sr - ferrite Powders Prepared by Hydrothermal Method |
| Authors |
이종현; 이혁희; 원창환 // Jong Hyeon Lee; Hyuk Hee Lee; Chang Whan Won |
| Abstract |
Synthesizing conditions of Sr-ferrite by hydrothermal method have been studied as function of process parameters such as SR^(+2) to Fe^(+3), (Fe^(+2)) mole ratio, pH, reaction temperature and reaction time. In the studied range Sr-ferrite powders could by synthesized by using Fe^(+3) as precursor, The optimum condition was as follows ; pH 13, Fe^(+3): SR^(+2)=0.12 : 0.07 mole, reaction temperature : 250℃, reaction time : 60 minutes. The mean particle size of synthesized powders was about 2㎛ with hexagonal plate shape. The saturation magnetization, remanence and coercive force were 62.1 emu/g, 3077G and 1.8KOe respectively. |