마그네슘과 글리세린 처리한 붕소 분말로 합성한 Mg(B1-xCx)2의 초전도 특성
(주)코리아스칼라
- 최초 등록일
- 2016.04.01
- 최종 저작일
- 2008.06
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서지정보
ㆍ발행기관 : 한국분말야금학회
ㆍ수록지정보 : 한국분말야금학회지 / 15권 / 3호
ㆍ저자명 : 김이정, 전병혁, 박순동, 탄카이신, 김봉구, 손재민, 김찬중
영어 초록
Carbon was known to be one of effective additives which can improve the flux pinning of at high magnetic fields. In this study, glycerin was selected as a chemical carbon source for the improvement of critical current density of . In order to replace some of boron atoms by carbon atoms, the boron powder was heat-treated with liquid glycerin. The glycerin-treated boron powder was mixed with an appropriate amount of magnesium powder to composition and the powder pallets were heat treated at for 30 min in a flowing argon gas. It was found that the superconducting transition temperature of prepared using glycerin-treated boron powder was 36.6 K, which is slightly smaller than (37.1 K) of undoped . The critical current density of was higher than that of undoped and the improvement effect was more remarkable at higher magnetic fields. The , decrease and increase associated with the glycerin treatment for boron powder was explained in terms of the carbon substitution to boron site.
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