Improved superconducting properties in Ti-doped MgB2 prepared by two-step reaction method and high-energy ball milling
作者： F. Yang , S.Q. Li , G. Yan , J.Q. Feng , X.M. Xiong
DOI: 10.1016/J.JALLCOM.2014.10.186
关键词:
摘要: Abstract High J c Ti-doped MgB 2 disks were synthesized by two-step reaction method and high-energy ball milling. In the first step, sample with a nominal composition of Mg 0.8 Ti 0.2 B 4 was sintered at 900 °C for 2 h. second an appropriate amount then added to get stoichiometry 0.9 0.1 , which milled 5 h 750 °C The phase, microstructure superconductivity characterized means X-ray diffraction (XRD), scanning electron microscope (SEM) superconducting quantum interference device (SQUID). critical current density reaches 6.9 × 10 A cm −2 20 K 1 T. investigation showed efficient combination between milling is effective obtain high fine grain size bulk performance.
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