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Applied Sciences
Special Issues
Superconductivity and Magnetism: Recent Advances, New Trends, and Applications
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Superconductivity and Magnetism: Recent Advances, New Trends, and Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Physics General".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 592

Special Issue Editors

Dr. Massimiliano Polichetti

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Guest Editor
Department of Physics “E.R. Caianiello”, University of Salerno, Via Giovanni Paolo II, 132, I-84084 Fisciano, Salerno, Italy
Interests: condensed matter physics; superconductivity; AC and DC magnetic properties; multi-harmonic AC susceptibility; vortex dynamics; magnetic materials
Special Issues, Collections and Topics in MDPI journals
Dr. Armando Galluzzi

E-Mail Website
Guest Editor
Department of Physics “E.R. Caianiello”, University of Salerno, Via Giovanni Paolo II, 132, I-84084 Fisciano, Salerno, Italy
Interests: superconductivity; iron-based superconductors; magnetic properties of low- and high-temperature superconductors; vortex dynamics; flux pinning properties; magnetism; magnetic measurements; magnetic materials; nanomaterials; magnetic nanoparticles
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue aims to provide a comprehensive overview of the latest developments in the intertwined fields of superconductivity and magnetism, two of the most fascinating phenomena in condensed matter physics. Superconductivity has been a subject of intense research since its discovery in 1911 due to its fascinating properties such as the current transport without dissipations. On the other hand, magnetism has been known to humanity for thousands of years but continues to surprise researchers with its richness and complexity. In recent years, the interplay between superconductivity and magnetism has emerged as a fertile ground for discovering new physics and developing novel applications. This Special Issue aims to capture the state of the art in this exciting fields, with a particular focus on the following topics:

  1. Recent Advances: We invite contributions that report on the latest experimental and theoretical developments in superconductivity and magnetism. These can include, but are not limited to, high-temperature superconductors, unconventional superconductivity, quantum spin liquids, and topological magnetic materials.
  2. New Trends: We are interested in articles that identify and discuss emerging trends in superconductivity and magnetism. This could involve new materials, novel experimental techniques, or innovative theoretical approaches.
  3. Applications: Finally, we seek papers that explore the potential applications of superconducting and magnetic materials in various domains such as energy, information technology, medicine, and transportation.

We hope that this Special Issue will serve as a valuable resource for researchers in the field and stimulate further advances in our understanding of superconductivity and magnetism. Regular articles, communications, and reviews are all welcome. We look forward to your contributions.

Dr. Massimiliano Polichetti
Dr. Armando Galluzzi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Applied Sciences 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 2400 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

  • superconductivity
  • magnetism
  • high-temperature superconductors
  • magnetic materials
  • superconducting devices
  • spintronics
  • magnetic applications
  • superconducting magnets, coils, and wires
  • magnetic nanoparticles
  • interplay between superconductivity and magnetism

Published Papers (1 paper)

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Research

14 pages, 5443 KiB  
Article
Pinning Energy and Evidence of Granularity in the AC Susceptibility of an YBa2Cu3O7-x Superconducting Film
by Armando Galluzzi, Adrian Crisan, Alina Marinela Ionescu, Ion Ivan, Antonio Leo, Gaia Grimaldi and Massimiliano Polichetti
Appl. Sci. 2024, 14(11), 4379; https://doi.org/10.3390/app14114379 - 22 May 2024
Viewed by 345
Abstract
The study of granularity in superconducting films by using AC susceptibility has a crucial role in the development of and improvement in the ReBCO-coated conductors, which are a constantly evolving reality in the modern power applications of superconductivity. Specifically, the study of the [...] Read more.
The study of granularity in superconducting films by using AC susceptibility has a crucial role in the development of and improvement in the ReBCO-coated conductors, which are a constantly evolving reality in the modern power applications of superconductivity. Specifically, the study of the granularity is essential because the ReBCO superconducting wires and tapes are far from the regularity of a single crystal while they often present an inter- and intragranular contribution to the critical current density. On the other hand, the AC susceptibility is a key part of the characterization of a granular sample because this technique is very sensitive to the presence of granularity in the superconductors and, moreover, the study of its first harmonic allows for determining pivotal properties such as the pinning energy as well as the dissipation processes acting in the sample. The pinning energy values and the granularity of an YBCO thin film have been studied by means of AC susceptibility measurements as a function of the AC amplitude, temperature, and DC field. In particular, the first harmonic imaginary component of the AC susceptibility χ1″ related to the dissipation processes of the sample has been studied. First, starting from the Brandt approach, the critical current density Jc and the pinning energy U of the sample have been extracted at 77 K by using the χ1″ measurements as a function of the AC amplitude at different AC frequencies and DC fields. From these measurements, a first signal of granularity appears. In order to confirm it, the temperature dependence of the χ1″ at different DC fields has been studied and a contribution deriving from the inter- and intragranular part of the sample has emerged. By taking the temperature corresponding to the crossover between the two contributions at the different DC fields, the intergranular and intragranular response has been separated. Successively, the temperature has been fixed to 77 K, together with an AC frequency equal to 1597.9 Hz, and the χ1″ as a function of the DC field at different AC amplitudes has been analyzed showing a clear presence of granularity in all the curves. By drawing the contour plot of the χ1″ with the DC and AC values, it was possible to determine the best parameters to put at 77 K in order to exploit the material for applications. Full article
(This article belongs to the Special Issue Superconductivity and Magnetism: Recent Advances, New Trends, and Applications)
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