Epitaxial YBa2Cu3O7 on biaxially textured nickel (001): An approach to superconducting tapes with high critical current density
Epitaxial YBa2Cu3O7 on biaxially textured nickel (001): An approach to superconducting tapes with high critical current density
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DOI：
10.1126/science.274.5288.755
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发表时间：
1996-11-01
期刊：
影响因子：
56.9
通讯作者：
List, FA
中科院分区：
文献类型：
--
作者：
Norton, DP;Goyal, A;List, FA
通过脉冲激光沉积在热机械轧制纹理的镍 (001) 带上生长了面内对齐、c 轴取向的 YBa2Cu3O7 (YBCO) 薄膜，其超导临界电流密度 J(c) 在 77 开尔文下高达每平方厘米 700,000 安培。直接在冷轧纯镍再结晶形成的双向织构镍上外延生长氧化物缓冲层，使得生长 1.5 微米厚的 YBCO 薄膜成为可能，其超导性能可与单晶氧化物基底上的外延薄膜观察到的超导性能相媲美。这一结果代表了一种生产用于 77 开尔文高电流、高场应用的长超导带材的可行方法。
In-plane-aligned, c axis-oriented YBa2Cu3O7 (YBCO) films with superconducting critical current densities J(c) as high as 700,000 amperes per square centimeter at 77 kelvin have been grown on thermomechanically rolled-textured nickel (001) tapes by pulsed-laser deposition. Epitaxial growth of oxide buffer layers directly on biaxially textured nickel, formed by recrystallization of cold-rolled pure nickel, made possible the growth of YBCO films 1.5 micrometers thick with superconducting properties that are comparable to those observed for epitaxial films on single-crystal oxide substrates. This result represents a viable approach for the production of long superconducting tapes for high-current, high-field applications at 77 kelvin.