期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 25, 期 3, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2015.2399309
关键词
Bulk MgB2; characterization; hardness; infiltration and growth
资金
- KACST-Cambridge Research Centre, Cambridge, U.K.
- EPSRC [EP/N007638/1] Funding Source: UKRI
Superconducting MgB2 has been synthesized successfully by a modified infiltration and growth (IG) technique. The ambient pressure technique is relatively simple and scalable to complex shaped bulks. The extent of MgB2 phase fin-mation has been found to be influenced strongly by the IG process time and/or temperature, and this is found to reflect in the X-ray diffraction patterns, magnetization measurements, and microhardness. Scanning electron microscopy images show a bimodal particle size distribution with 20-50 nm sized fine precipitates in the inter particle region. A critical current density of 400 kA.cm(-2) was measured at 5 K.
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