화학기상응축공정(Chemical Vapor Condensation)으로 제조된 Co 나노분말의 미세구조 및 자기적 성질에 미치는 운송기체의 영향
Effect of Carrier Gas on the Microstructure and Magnetic Properties of Co Nanoparticles Synthesized by Chemical Vapor Condensation
2
조회
0
다운로드
2
인용
0
참고문헌
초록
Abstract
The nano-sized Co particles were successfully synthesized by chemical vapor condensation (CVC) process using the precursor of cobalt carbonyl (Co2(CO)8). The influence of carrier gases on the microstructure and magnetic properties of nanoparticles was investigated by means of XRD, TEM, XPS and VSM. The Co nanoparticles with different phases and shapes were synthesized with a change of carrier gas : long string morphologies with coexistence of fcc and hcp structure in Ar carrier gas condition; finer Co core in a mass of cobalt oxide with only fcc structure in He; rod type cobalt oxide phase in Ar+6vol%O2. The saturation magnetization and coercivity was lower in Co nanoparticles synthesized in He carrier gas, due to their finer size.
참고문헌 (2)
- "Nanomaterials - Synthesis" (1996), Institute of Physics Publishing
- "Transport Phenomena in Metallurgy" (1973), Addison -Wesley Publishing Company