低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
研究論文
Nd1+xBa2-xCu3O7+δ単結晶試料のピン止め特性の向上
町 敬人
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ジャーナル フリー

2009 年 44 巻 12 号 p. 594-602

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To obtain useful information on how to improve the irreversibility field Hirr and critical current density Jc in RE123 systems, the critical current properties of Nd1+xBa2-xCu3O7+δ(Nd123) have been studied. Various parameters, such as partial pressure of oxygen P(O2) during the growth of single crystals, the influence of post-annealing at 900‣ and quenching under different P(O2), the oxygen annealing under high P(O2) and element-substitution into the crystals, were systematically changed. On special notice is that Hirr of the Nd123 single crystal was remarkably increased by partial substitution of Ca for the Nd-site up to 13.3 T at 77 K.

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© 2009 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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