On the role of Ag in enhancement of Jc in YBa2Cu3O7−δ thin films
1995; Elsevier BV; Volume: 248; Issue: 3-4 Linguagem: Inglês
10.1016/0921-4534(95)00257-x
ISSN1873-2143
AutoresD.S. Misra, Binto John, R. Pinto, L.S. Mombasawala, S.B. Palmer,
Tópico(s)Advanced Condensed Matter Physics
ResumoAbstract The role of Ag in the enhancement of Jc in YBa2Cu3O7−δ (YBCO) thin films is investigated. Studies show that the concentration of Ag in laser-ablated films made from YBCO targets containing 1–20 wt.% Ag, is less than 0.1%. Jc has been found to improve with Ag doping by a factor of 8 in the films which were prepared from targets containing 5 wt.% Ag. A theoretical model based on the reduction in the resistive grain-boundary size is proposed to explain the observed enhancement of Jc.
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