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논문 기본 정보

자료유형
학술저널
저자정보
Ranot, Mahipal (Materials Deformation Department, Korea Institute of Materials Science) Shinde, K.P. (Functional Nano Materials Department, Korea Institute of Materials Science) Oh, Y.S. (Materials Deformation Department, Korea Institute of Materials Science) Kang, S.H. (Materials Deformation Department, Korea Institute of Materials Science) Jang, S.H. (Kiswire Advanced Technology Ltd.) Hwang, D.Y. (Kiswire Advanced Technology Ltd.) Chung, K.C. (Functional Nano Materials Department, Korea Institute of Materials Science)
저널정보
한국초전도저온학회 한국초전도·저온공학회논문지 한국초전도·저온공학회논문지 제19권 제3호
발행연도
2017.1
수록면
40 - 43 (4page)

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Carbon coating approach is used to prepare carbon-doped $MgB_2$ bulk samples using low-cost naphthalene ($C_{10}H_8$) as a carbon source. The coating of carbon (C) on boron (B) powders was achieved by direct pyrolysis of naphthalene at $120^{\circ}C$ and then the C-coated B powders were mixed well with appropriate amount of Mg by solid state reaction method. X-ray diffraction analysis revealed that there is a noticeable shift in (100) and (110) Bragg reflections towards higher angles, while no shift was observed in (002) reflections for $MgB_2$ doped with carbon. As compared to un-doped $MgB_2$, a systematic enhancement in $J_c(H)$ properties with increasing carbon doping level was observed for naphthalene-derived C-doped $MgB_2$ samples. The substantial enhancement in $J_c$ is most likely due to the incorporation of C into $MgB_2$ lattice and the reduction in crystallite size, as evidenced by the increase in the FWHM values for doped samples.

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