Synthesis of Samarium-Cobalt Sub-micron Fibers and Their Excellent Hard Magnetic Propertie
- Title
- Synthesis of Samarium-Cobalt Sub-micron Fibers and Their Excellent Hard Magnetic Propertie
- Author
- 김종렬
- Keywords
- samarium cobalt; electrospinning; fiber; permanent magnet; magnetic properties
- Issue Date
- 2018-02
- Publisher
- Frontiers Media S.A.
- Citation
- Frontiers in Chemistry, v. 6, article no. 18, Page. 1-7
- Abstract
- High-throughput synthesis of Samarium-Cobalt sub-micron fibers with controlled composition and dimension was demonstrated by combining electrospinning and reduction-diffusion processes. The composition of fibers was readily varied (8 < Sm < 20 at.%) by adjusting precursor composition whereas the diameter of fibers was precisely controlled by varying electrospinning parameters (e.g., applied voltage, solution feed rate, temperature, and humidity) to reach single-domain size. X-ray diffraction patterns confirmed that single phase Sm2Co17 fibers were synthesized when the metal precursor ratio (Sm3+/(Sm3+ + Co2+)) was precisely controlled at 10.6%, whereas mixed phases (i.e., Co-Sm2Co17 or Sm2Co17-Sm2Co7) were observed when the ratio is deviated from the stoichiometric. Magnetic saturation (M-s) of the synthesized fibers monotonically decreased with an increased in Sm content. In contrast, coercivity (H-ci) monotonically increased with an increase in Sm content.
- URI
- https://www.frontiersin.org/articles/10.3389/fchem.2018.00018/fullhttps://repository.hanyang.ac.kr/handle/20.500.11754/182984
- ISSN
- 2296-2646
- DOI
- 10.3389/fchem.2018.00018
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
- Files in This Item:
- 4572_김종렬.pdfDownload
- Export
- RIS (EndNote)
- XLS (Excel)
- XML