Structural Properties of MgB2 Superconductors with a
Critical Current Density Greater than 105A/cm2

Chin. Phys. Lett.

2001, Vol. 18

Issue (5): 680-683 DOI:

Original Articles

Structural Properties of MgB₂ Superconductors with a Critical Current Density Greater than 10⁵A/cm²

LI Jian-Qi¹;LI Long^1,2;ZHOU Yu-Qing¹;REN Zhi-An¹;CHE Guang-Can¹;ZHAO Zhong-Xian¹

¹National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 ²Department of Physics, Ningxia University, Yinchuan 750021

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LI Jian-Qi, LI Long, ZHOU Yu-Qing et al 2001 Chin. Phys. Lett. 18 680-683

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Abstract Structural features of MgB₂ superconductors prepared under different conditions have been analysed by means of transmission electron microscopy. The MgB₂ crystal is identified to have a hexagonal structure with the space group of P6/mmm. Superconducting materials synthesized under a high pressure of 6 Gpa are made of regularly stacked grains as large as a few microns in sizes. Stacking faults and microstructure properties of grain boundaries either with or without impurities, appearing in a sample with the critical current density greater than 10⁵A/cm², have been systematically investigated.

Keywords: 74.62.Bf 74.60.-w 61.14.Lj 61.16.Bg

Published: 01 May 2001

PACS:	74.62.Bf	(Effects of material synthesis, crystal structure, and chemical composition)
	74.60.-w
	61.14.Lj
	61.16.Bg

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I5/0680

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	ZHAO Zhong-Xian

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