Enhancing superconducting properties of YBa2Cu3O7- ẟ through Nd2O3 addition prepared using modified thermal decomposition method

IF 2.5 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Applied Physics A Pub Date : 2024-11-18 DOI:10.1007/s00339-024-08035-z
Arebat Ryad Alhadei Mohamed, Mohd Mustafa Awang Kechik, Chen Soo Kien, Lim Kean Pah, Hussien Baqiah, Khairul Khaizi Mohd Shariff, Yap Siew Hong, Hoo Keong Peh, Abdul Halim Shaari, Syahrul Humaidi, Muralidhar Miryala
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Abstract

Polycrystalline YBa2Cu3O7−δ (Y-123) samples with different varying weight percentages (x = 0.0, 0.1, 0.3, 0.5, 1.0, and 5.0 wt.%) of neodymium oxide (Nd2O3) addition have been successfully synthesized using a modified thermal decomposition method (DM) under ambient conditions. X-ray diffraction (XRD) analysis revealed favorable orthorhombicity values (~ 0.008) for the Y-123 crystal structure, and an estimated oxygen content close to the theoretical value (~ 6.8), along with the presence of light secondary phases such as Y2BaCuO5 (Y-211) and BaCuO2. For FESEM analysis, it was found that 5.0 wt.% Nd2O3 increased porosity and reduced grain size, negatively impacting superconductivity. Conversely, 0.5 wt.% Nd2O3 promoted significant grain growth, leading to enhanced grain contact and a denser microstructure. Electrical resistivity measurements confirmed superconducting transitions in all samples. Notably, the 0.5 wt.% Nd2O3 sample exhibited an optimal Tc-onset of 94.14 K with a narrow transition width ΔTc of 4.04 K. In contrast, the higher 5.0 wt.% Nd2O3 concentration resulted in a broader ΔTc of 7.47 K, suggesting the lower doping provided more optimal superconducting performance. AC susceptibility measurements corroborated these findings. This DM method offers a cost-effective approach for Y-123 synthesis, with potential for further optimization through alkali metal doping to reduce costs and environmental impact.

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通过添加 Nd2O3 增强改良热分解法制备的 YBa2Cu3O7- ẟ 的超导特性
在常温条件下,采用改良热分解法 (DM) 成功合成了添加不同重量百分比(x = 0.0、0.1、0.3、0.5、1.0 和 5.0 重量百分比)氧化钕 (Nd2O3) 的多晶 YBa2Cu3O7-δ (Y-123) 样品。X 射线衍射 (XRD) 分析表明,Y-123 晶体结构的正交性值良好(约 0.008),氧含量估计值接近理论值(约 6.8),同时还存在 Y2BaCuO5 (Y-211) 和 BaCuO2 等轻质次生相。通过 FESEM 分析发现,5.0 wt.% Nd2O3 会增加孔隙率并减小晶粒尺寸,从而对超导性产生不利影响。相反,0.5 wt.% 的 Nd2O3 会促进晶粒的显著增长,从而增强晶粒接触,使微观结构更加致密。电阻率测量证实了所有样品中的超导转变。值得注意的是,0.5 wt.% Nd2O3 样品的最佳 Tc 起始点为 94.14 K,窄转变宽度 ΔTc 为 4.04 K;相比之下,5.0 wt.% Nd2O3 浓度较高时,ΔTc 宽度为 7.47 K,这表明较低的掺杂量能提供更理想的超导性能。交流电感测量证实了这些发现。这种 DM 方法为 Y-123 的合成提供了一种具有成本效益的方法,并有可能通过碱金属掺杂进一步优化,以降低成本和对环境的影响。
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来源期刊
Applied Physics A
Applied Physics A 工程技术-材料科学:综合
CiteScore
4.80
自引率
7.40%
发文量
964
审稿时长
38 days
期刊介绍: Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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