Property Improvement of 600-nm-Thick YBCO Superconducting Films Fabricated Using a Pb-Modified MOD Method

Feng, Feng; Huang, Rongxia; Qu, Timing; Zhu, Yongpei; Lu, Hongyuan; Zhang, Xiangsong; Xiao, Shaozhu; Hou, Zongfang; Zhang, Pan; Han, Z.

doi:10.1109/tasc.2016.2542285

Cited by 10 publications

(1 citation statement)

References 24 publications

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“…Conversely, some articles reported that YBCO films prepared by MOD and using Au, Ag, and Pb as dopants showed an improvement in morphology along with higher self-field J c values. In those cases, when a metallic dopant is used, the formation of intermetallic phases is likely responsible for chemical potential changes of c - and a -axis nucleations favoring the c -axis orientation. − In analogy to such studies, it may be assumed that the addition of ND is beneficial to c -axis film nucleation during the crystallization step. However, in the case of carbon-based nanomaterials (CBNs), the intermetallic phase formation can be excluded, so a different mechanism (or influence) should be hypothesized.…”

Section: Introductionmentioning

confidence: 99%

Nanodiamond Influence on the Nucleation and Growth of YBCO Superconducting Film Deposited by Metal–Organic Decomposition

Pinto

Vannozzi

Celentano

et al. 2023

Crystal Growth & Design

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It was recently shown that the introduction of nanodiamond (ND) into a superconducting metal–organic deposited YBa2Cu3O7−δ (YBCO) film produces an increase in critical current density in self-field conditions (B = 0 T). Such improvement appears to be due to the formation of denser and smoother films than the samples deposited without ND. This paper presents the work done to understand the role of ND during YBCO nucleation and growth. A detailed study on YBCO+ND films quenched at different temperatures of the crystallization process was carried out. Results showed that the reaction responsible for YBCO production appeared effectively affected by ND. In particular, ND stabilizes one of the YBCO precursors, BaF2(1–x)O x , whose conversion into YBCO requires a prolonged time. Therefore, the YBCO nucleation is slowed down by ND and begins when the experimental conditions favor both thermodynamically and kinetically the formation of YBCO along the c-axis. This effect has important implications because the growth of a highly epitaxial c-axis YBCO film enables excellent superconducting performance.

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