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Synthesis and Magnetic Properties of Sm2Co17 Particles using Salt-assisted Spray Pyrolysis and a Reduction-Diffusion Process

Title
Synthesis and Magnetic Properties of Sm2Co17 Particles using Salt-assisted Spray Pyrolysis and a Reduction-Diffusion Process
Author
좌용호
Keywords
Samarium cobalt; Permanent magnet; Spray pyrolysis; Molten salt process; Reduction-diffusion process; Magnetic property
Issue Date
2019-05
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED SURFACE SCIENCE, v. 475, Page. 986-989
Abstract
Sm2Co17 particles, with several hundreds of nanometers to a few micrometers in diameter, were synthesized by a combination of salt-assisted ultrasonic spray pyrolysis and a reduction-diffusion (R-D) process. It was found that NaCl plays a decisive role toward the suppression of particle coalescence during R-D process. By optimizing a reductant contents, the single-phased and non-agglomerated Sm2Co17 particles were obtained. In addition, particle size was controlled by varying calcination temperature from 800 degrees C to 1100 degrees C and size-dependent magnetic properties were observed. The optimum magnetic properties were achieved at a calcination temperature of 900 degrees C: coercivity of 5.3 kOe, a saturation magnetization of 99.33 emu/g, and a remanence of 56.53 emu/g.
URI
https://www.sciencedirect.com/science/article/pii/S0169433219300418https://repository.hanyang.ac.kr/handle/20.500.11754/114752
ISSN
0169-4332; 1873-5584
DOI
10.1016/j.apsusc.2019.01.030
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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