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Biopolymer-Mediated Inorganic Crystal Growth at Reduced Temperature with Enhanced Kinetics and Morphological Direction

机译:生物聚合物介导的无机晶体在降低的温度下以增强的动力学和形态学方向生长

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摘要

We describe and develop an example of the successful application of a broadly applicable biomimetic growth process to the crystal growth of the complex inorganic quaternary high-temperature superconducting ceramic oxide YBa_2Cu_3O_(7?δ). By combining effective biopolymer mediation with established synthetic single crystal growth processes, we leverage a reduction in the required growth temperature from 1045 to 920 °C to enable the successful use of a molten salt synthesis technique in place of the high-temperature solution method commonly employed. Further, the influence of the biopolymer on the seed crystal nucleation provides for morphological control of the synthesis product, offering the potential for designed macromorphologies through biopolymer selection or customization. The method described is directly applicable to other difficult-to-synthesize materials that presently rely on similar conventional techniques, or for which such approaches have been found to fail, thereby providing a novel route to the successful bulk synthesis of complex refractory materials.
机译:我们描述并开发了一个成功的例子,该例子将广泛适用的仿生生长工艺成功应用于复杂的无机季高温超导陶瓷氧化物YBa_2Cu_3O_(7?δ)的晶体生长。通过将有效的生物聚合物介导与已建立的合成单晶生长工艺相结合,我们利用所需的生长温度从1045降低到920°C,从而能够成功使用熔融盐合成技术来代替通常使用的高温溶液法。此外,生物聚合物对种晶成核的影响提供了合成产物的形态控制,为通过生物聚合物选择或定制来设计宏观形态提供了潜力。所描述的方法可直接应用于目前依赖于类似常规技术的其他难以合成的材料,或已发现此类方法失败的方法,从而为成功地批量合成复杂的耐火材料提供了一条新颖的途径。

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