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Advanced Superconducting Materials and Technology

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Quantum Materials".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 617

Special Issue Editors


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Department of Advanced Materials and Technologies, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
Interests: additive manufacturing: personalized implants, titanium alloys; clean energy: the hydrogen economy; nanotechnology: nanomaterials for solid state hydrogen storage; nanostructured magnetic and superconducting materials; intermetallics and other advanced materials
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Division of Low Temperature and Superconductivity, Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
Interests: superconductivity; critical currents; cables manufacturing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rapid development of technology observed in recent decades poses increasingly difficult challenges in the field of modern materials. Superconducting materials, especially high-temperature ones, are among the key materials for the development of modern energy industry, transport, and medicine. Hence, there is a constant search for new solutions in new, high-temperature materials through theoretical modeling and experimental work. Moreover, some materials are already so technologically mature, or will soon be, that they create the possibility of breakthroughs in many fields, from quantum computers to nuclear fusion technology.

In this Special Issue, we provide a venue for presenting both theoretical and experimental research results in the field of superconducting materials, as well as reports on technological achievements using superconductivity. Full articles, short communications, and review papers are welcome for submission.

Prof. Dr. Tomasz Czujko
Dr. Daniel Gajda
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • superconducting materials
  • MgB2
  • iron-based superconductors
  • high Tc Superconductors
  • synthesis and characterization
  • application of superconductors

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Published Papers (1 paper)

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Research

19 pages, 23048 KiB  
Article
Avoiding the Formation of Bubbles and Pits in Buffered Chemical Polishing for the Niobium Superconducting Cavity Through Adjusting the Acid Ratio
by Zheng Wang, Jinfang Chen, Yue Zong, Shuai Xing, Jiani Wu, Yawei Huang, Xiaowei Wu, Zhejia Xu, Xuhao He, Xiaohu Wang, Xuan Huang, Zhaoxi Chen, Xuerong Liu and Dong Wang
Materials 2025, 18(5), 960; https://doi.org/10.3390/ma18050960 - 21 Feb 2025
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Abstract
Buffered chemical polishing (BCP) is an important and widely used polishing technique for superconducting radio-frequency (SRF) cavities made of niobium. A common problem encountered during BCP is the formation of bubbles and W-shaped pits on the cavity surface, which may severely limit the [...] Read more.
Buffered chemical polishing (BCP) is an important and widely used polishing technique for superconducting radio-frequency (SRF) cavities made of niobium. A common problem encountered during BCP is the formation of bubbles and W-shaped pits on the cavity surface, which may severely limit the RF performance. We report a method to address the problem of W-shaped pits through optimizing the BCP acid ratio. We systematically investigate the effect of the BCP acid ratio through sample and cavity BCP experiments and determine an optimal ratio for the three acids. The new BCP recipe with the optimal acid ratio is verified through the development of niobium cavities with several different shapes, which are shown to be free of pits and demonstrate excellent RF performance; notably, several 3.9 GHz nine-cell cavities present unprecedented accelerating gradients. Furthermore, the findings suggest a simple pit-free BCP recipe that does not require H3PO4, using only HF and HNO3. The method proposed in this study is also appropriate for suppressing pit formation with other acid mixtures or when polishing other metal objects. Full article
(This article belongs to the Special Issue Advanced Superconducting Materials and Technology)
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