Enhanced in-field critical current densities in YSZ-mixed YBa2Cu3O7-x films
Enhanced in-field critical current densities in YSZ-mixed YBa2Cu3O7-x films

MELE Paolo , 松本 要 , 堀出 朋哉 （京大）；吉田 隆 （名大）；向田 昌志 （九）；一瀬 中 （電中研）；堀井 滋 （東大）
pmele*htsc.mbox.media.kyoto-u.ac.jp

Abstract: We induced linear artificial pinning centers （APCs） in YBCO films using a surface-modified target: a thin YSZ sector was set on the YBCO target， and thin films were ablated by PLD on SrTiO3 buffered MgO single crystals. Using a wide YSZ sector （corresponding to about 0.33 Vol%） on YBCO target， we fabricated high quality YBCO＋YSZ mixed thin films. In comparison with a pure YBCO film， the effect of APCs was an enhancement of Jc at 77K for mixed YBCO＋YSZ thin film from 1.46 MA/cm2 to 1.86 MA/ cm2 （H＝0T） and from 0.09MA/ cm2 to 0.28MA/ cm2 （H＝5T， B//c） even when both films were prepared on the same deposition conditions.