HIGH-PRESSURE SYNTHESIS OF MgB2 SUPER-CONDUCTOR WITH Tc ABOVE 39 K

doi:10.1088/1009-1963/10/4/315

Abstract

Abstract We report on the high-pressure synthesis and superconductivity of MgB₂ intermetallic compounds. The compounds have been obtained through high-pressure sintering of the mixtures of magnesium and boron fine powders under 5.0 GPa and at ～1000℃ for 30 min. Magnetic measurements using a SQUID magnetometer show the sharp bulk superconducting transition above 39 K; the four-probe dc resistivity measurements indicate the highly-conductive normal state and sharp superconducting transition. The results highlight that high-pressure synthesis would be a promising way to promote the studies of this new kind of intermetallic superconductors.

Keywords: MgB₂ high-pressure synthesis superconductivity

Received: 21 February 2001
Accepted manuscript online:

PACS:	81.20.Ev	(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
	74.70.Ad	(Metals; alloys and binary compounds)
	74.10.+v	(Occurrence, potential candidates)

Fund: Project supported by the Outstanding Youth Fund of National Natural Science Foundation of China (Grant No.59725105), and "Hundreds of Talents" Program of the Chinese Academy of Sciences.

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Li Shao-chun (李绍春), Zhu Jia-lin (朱嘉林), Yu Ri-cheng (禹日成), Li Feng-ying (李凤英), Liu Zhen-xing (刘振兴), Jin Chang-qing (靳常青) HIGH-PRESSURE SYNTHESIS OF MgB₂ SUPER-CONDUCTOR WITH T_c ABOVE 39 K 2001 Chinese Physics 10 338

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HIGH-PRESSURE SYNTHESIS OF MgB2 SUPER-CONDUCTOR WITH Tc ABOVE 39 K

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HIGH-PRESSURE SYNTHESIS OF MgB₂ SUPER-CONDUCTOR WITH T_c ABOVE 39 K