| 학회 |
한국재료학회 |
| 학술대회 |
2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
| 권호 |
20권 2호 |
| 발표분야 |
B. 나노 재료(Nanomaterials) |
| 제목 |
Facile synthesis of high magnetization FeCo nanoparticles through a one pot polyol process using all metal chloride precursors |
| 초록 |
High magnetization FeCo nanoparticles with different Fe/Co ratios have been prepared from the metal chlorides through an environment friendly and surfactant free modified polyol process. Ethylene glycol was used as a solvent, reducing agent in this process. Co chloride instead of Co acetate has been used to synthesize small size (＜100 nm) by enhancing the reduction process in terms of hydroxide ion concentration, reaction temperature optimization. We found that the chloride precursors yielded the well-controlled compositional nanoparticles. An ultrasound irradiation in polyol process affects the uniform spherical FeCo nanoparticles. All the synthesized samples were annealed at 6000c for 2hrs by passing hydrogen gas. X-ray diffraction(XRD) data on the samples confirm that in all the compositions got a single phase body-centered–cubic structured FeCo alloy. Transmission Electron Microscopy (TEM) data suggested that the annealed ultrasonicated FeCo nanoparticles are of 18-25 nm in size and spherical shape. The vibrating sample magnetometer (VSM) measurements reveals that the Fe60Co40had highest magnetization of 236emu/g among the all samples. |
| 저자 |
Rambabu Kuchi1, 정종율2
|
| 소속 |
1Department of Materials Science and Engineering and Graduate School of Energy Science and Technology, 2Chungnam National Univ. |
| 키워드 |
Magnetic nanoparticles; FeCo; High magnetization
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| E-Mail |
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