Investigation of DyBa2Cu3O7−d superconducting domains grown by the infiltration technique starting with small size Dy-211 particles
Investigation of DyBa2Cu3O7−d superconducting domains grown by the infiltration technique starting with small size Dy-211 particles
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DOI：
10.1088/0953-2048/18/2/028
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发表时间：
2005-02
影响因子：
3.6
通讯作者：
J. Mathieu;T. Koutzarova;A. Rulmont;J. Fagnard;P. Laurent;B. Mattivi;P. Vanderbemden;M. Ausloos;R. Cloots
中科院分区：
文献类型：
--
作者：
J. Mathieu;T. Koutzarova;A. Rulmont;J. Fagnard;P. Laurent;B. Mattivi;P. Vanderbemden;M. Ausloos;R. Cloots
本文采用渗透和生长工艺替代经典的顶种子熔融织构生长工艺，生产具有精细分散的小尺寸Dy-211颗粒的Dy-123单畴。起始材料是211颗粒和富钡、富铜液相前驱体。渗透和生长过程可以控制211粒子在最终超导123单畴中的空间和尺寸分布。讨论了渗透和生长过程的主要参数（设置、相对于包晶温度的最高处理温度、反应物性质、211预坯的孔隙率）。此外，还展示了不同的化学过程，以生产具有控制形状和大小的Dy-211颗粒，这些颗粒可以作为渗透和生长过程的前驱体。
An infiltration and growth process is here used as an alternative to the classical top-seeded melt-textured growth process for the production of Dy-123 single-domains with finely dispersed small size Dy-211 particles. The starting materials are the 211-particles and a barium and copper rich liquid phase precursor. The infiltration and growth process allows for controlling both the spatial and size distribution of the 211-particles in the final superconducting 123-single-domain. The main parameters (set-ups, maximum processing temperature with respect to the peritectic temperature, nature of reactant, porosity of the 211-preform) of the infiltration and growth process are discussed. Moreover, different processes of chimie douce are shown in order to produce Dy-211 particles with controlled shape and size, particles that can be used as precursors for the infiltration and growth process.