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25 April 2024

» arxiv » cond-mat/0109216

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The high-pressure synthesis of MgB2
T. A. Prikhna ; W. Gawalek ; A. B. Surzhenko ; N. V. Sergienko ; V.E. Moshchil ; T. Habisreuther ; V. S. Melnikov ; S. N. Dub ; P. A. Nagorny ; M. Wendt ; Ya. M. Savchuk ; D. Litzkendorf ; J. Dellith ; S. Kracunovska ; Ch. Schmidt ;
Date:	12 Sep 2001
Subject:	Superconductivity \| cond-mat.supr-con
Abstract:	The high-pressure synthesis is one of the most promising methods to produce MgB2 superconductive (SC) material. The available high-pressure apparatuses have working volume up to 100 cm3 which allows samples up to 60 mm in diameter to be manufactured. By a short-term (1h) high-pressure (2GPa) synthesis from Mg and B we have obtained samples 2.4-2.5 g/cm3 in density, 12.1-15.6 GPa in microhardness (under 4.96 N load), 170-200 kA/cm2 at 10 K and 58-62 kA/cm2 at 20 K in critical current density at a magnetic field of 1T. Samples demonstrated 8.5 T irreversible field at 10 K and 5.5 T at 20 K. The Ta positive influence on SC properties of MgB2 has been observed.
Source:	arXiv, cond-mat/0109216
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