| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 봄 (04/08 ~ 04/09, 대전컨벤션센터) |
| 권호 |
35권 1호 |
| 발표분야 |
대학원생 구두발표 |
| 제목 |
Synthesis of L10 Phase FePt Nanoparticles inside Cellular Ordered Mesopores through Organic-Inorganic Hydbrid Materials |
| 초록 |
Ordered assembly of FePt nanocrystals is of great importance for magnetic data storage media. Tetragonal (fct) structured FePt is known to have large uniaxial magnetocrystalline anisotropy and high coercivity. Chemical routes were frequently employed to synthesize monodisperse FePt nanocrystals. The chemically synthesized FePt nanocrystals have to be heat-treated to 550 oC or more to obtain fct phase FePt. However, the surfactants coating the particles are decomposed at these temperatures, leading to agglomeration of monodisperse nanoparticles. Herein, we report on simple ‘one-pot’ synthetic method of size controlled L10 phase FePt nanoparticles. Synthesis was achieved by the assembly of PI-b-PEO block copolymers with aluminosilicate sols, Fe and Pt organometals. The as-synthesized material was heat treated to 800 °C.The XRD, TEM and SQUID investigations were performed to characterize the properties of fct FePt nanocrystals encapsulated in ordered cellular mesopores. |
| 저자 |
강은애1, 김진곤2, 이진우2, 심종민2, 권승철3, 박제근4, 정현옥4
|
| 소속 |
1포항공과대, 2포항공대 화공과, 3포황공대 화공과, 4성균관 대 |
| 키워드 |
block copolymer; FePt nanoparticles
|
| E-Mail |
|
