Synergistic strategies for enhancing flux pinning in YBa2Cu3O7-x thin films at high fields and low temperature

IF 1 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2025-01-09 DOI:10.1016/j.physc.2025.1354648

Francesco Rizzo , Laura Piperno , Andrea Augieri , Alexander Meledin , John Feighan , Judith L. MacManus-Driscoll , Giuseppe Celentano

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Abstract

An unexplored approach for the improvement of the flux pinning of YBa₂Cu₃O_7-x(YBCO) superconducting films grown by pulsed laser deposition (PLD) on SrTiO₃ single-crystals is presented. Hence, substrate-decorated ZrO₂ nanoislands combined with Ba₂Y(Nb/Ta)O₆ nanocolumns were engineered into YBCO films. The nanoislands produced a high density of pinning centres. In this synergistic combined pinning scenario, an absence of a temperature scaling pinning force, F_p(H) behaviour was observed, confirming several pinning mechanisms are active in the system. Thus, the high density of stacking faults and BYTO nanocolumns were both shown to be effective for high field pinning at <50K. Further optimisation of the densities and volumes of each pinning type is expected to produce enhanced high field (>9 T) pinning behaviour.

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高场低温下增强YBa2Cu3O7-x薄膜磁钉钉的协同策略

提出了一种改进脉冲激光沉积（PLD）在SrTiO3单晶上生长YBa2Cu3O7-x（YBCO）超导膜通量钉钉的新方法。因此，衬底修饰的ZrO2纳米岛结合Ba2Y(Nb/Ta)O6纳米柱被设计成YBCO薄膜。纳米岛产生了高密度的钉钉中心。在这种协同复合钉钉情况下，观察到没有温度结垢的钉钉力，Fp(H)行为，证实了系统中存在几种有效的钉钉机制。因此，在<；50K下，高密度的层错和BYTO纳米柱都是有效的高场钉钉。进一步优化每种钉钉类型的密度和体积，有望产生增强的高场（> 9t）钉钉行为。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.