Single crystals of MgB2 superconductor grown under high-pressure in Mg-B-N system

被引：16

作者：

Lee, S ^{[1
]}

Yamamoto, A ^{[1
]}

Mori, H ^{[1
]}

Eltsev, Y ^{[1
]}

Masui, T ^{[1
]}

Tajima, S ^{[1
]}

机构：

[1] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷

关键词：

MgB2; single crystal growth; high-pressure; Mg-B-N system;

D O I：

10.1016/S0921-4534(02)01377-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Here, we report the growth of magnesium diboride (MgB2) single crystals under high-pressure in the Mg-B-N system. The phase stability limit of MgB2 in P-T space was determined and reaction diagram for the crystal growth of MgB2 under high-pressure was proposed. It was found that utilization of longitudinal temperature gradient and optimisation of reactant pellets locations in the BN high-pressure cell is very helpful for reproducible growth of MgB2 single crystals of various shapes and size of 200-700 mum. The high-quality of the samples was confirmed by single crystal X-ray diffraction and sharp superconducting transitions at T-c = 38.1-38.3 K obtained in both magnetization (DeltaT(c) = 0.6 K) and resistivity (DeltaT(c) = 0.3 K) measurements. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：33 / 37

页数：5

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