期刊
MATERIALS RESEARCH BULLETIN
卷 35, 期 10, 页码 1653-1659出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0025-5408(00)00369-X
关键词
nanostructures; superconductors; chemical synthesis; electron microscopy
Synthesis of magnesium oxide (MgO) nanorods was achieved by simply heating MgCl2 powder at 750 degreesC for 1.5 h in a constant flow of mixture gas (90% pure argon and 10% pure hydrogen). Transmission electron microscopy (TEM) morphology and energy-dispersive X-ray spectrometry (EDX) analysis showed that the product is mainly composed of MgO nanorods with diameters of 15 to 50 nm, and lengths ranging from 1 to 3 micrometers. After the MgO nanorods were incorporated into (Bi, Pb)-2223 superconductor, the critical current densities (Jc's) of the nanorod-superconductor composites are significantly enhanced. (C) 2000 Elsevier Science Ltd. All rights reserved.
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