Synthesis and magnetic properties of Sm2Co17 particles using salt-assisted spray pyrolysis and a reduction-diffusion process
- Authors
- Hwang, Tae-Yeon; Lee, Jimin; Kang, Min Kyu; Lee, Gyutae; Kim, Jongryoul; Choa, Yong-Ho
- Issue Date
- May-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Samarium cobalt; Permanent magnet; Spray pyrolysis; Molten salt process; Reduction-diffusion process; Magnetic property
- Citation
- APPLIED SURFACE SCIENCE, v.475, pp.986 - 989
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 475
- Start Page
- 986
- End Page
- 989
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/2949
- DOI
- 10.1016/j.apsusc.2019.01.030
- ISSN
- 0169-4332
- 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.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
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