Cargando…

Method to improve critical current density measurement of superconducting materials()

The critical current density J(c) is an important indicator of superconducting materials in practical applications. And the third harmonic voltage method is a simple, efficient and damage-free method for measuring J(c) of high-temperature superconducting films. In order to more effectively measure t...

Descripción completa

Detalles Bibliográficos
Autores principales: Shao, Yunkai, Liu, Longxiang, Wang, Sansheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10017304/
https://www.ncbi.nlm.nih.gov/pubmed/36937815
http://dx.doi.org/10.1016/j.mex.2023.102087
_version_ 1784907552142655488
author Shao, Yunkai
Liu, Longxiang
Wang, Sansheng
author_facet Shao, Yunkai
Liu, Longxiang
Wang, Sansheng
author_sort Shao, Yunkai
collection PubMed
description The critical current density J(c) is an important indicator of superconducting materials in practical applications. And the third harmonic voltage method is a simple, efficient and damage-free method for measuring J(c) of high-temperature superconducting films. In order to more effectively measure the J(c) of high-temperature superconducting REBa(2)Cu(3)O(7-δ) films and improve the signal-to-noise ratio based on the third harmonic voltage method, a double-sided measurement method was hereby proposed. By integrating the electromagnetic shielding effect and the 2-coil measurement system, the Meissner effect was used to reduce the harmonic voltage noise in the pickup coil. Comparing the double-sided measurement system using the new method to the 2-coil measurement system, the signal-to-noise ratio increases by 10 dB to 20 dB in the case of a J(c) • The noise in the pickup coil is reduced and the signal-to-noise ratio is improved in the frequency range from 100 Hz to 1000 Hz by using the Meissner effect. • The measurement bandwidth is increased, making it possible to conduct low-frequency measurement in the future by the double-sided measurement method. • The method provides an improvement direction for superconducting thin films with a high critical current density in the future.
format Online
Article
Text
id pubmed-10017304
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-100173042023-03-17 Method to improve critical current density measurement of superconducting materials() Shao, Yunkai Liu, Longxiang Wang, Sansheng MethodsX Method Article The critical current density J(c) is an important indicator of superconducting materials in practical applications. And the third harmonic voltage method is a simple, efficient and damage-free method for measuring J(c) of high-temperature superconducting films. In order to more effectively measure the J(c) of high-temperature superconducting REBa(2)Cu(3)O(7-δ) films and improve the signal-to-noise ratio based on the third harmonic voltage method, a double-sided measurement method was hereby proposed. By integrating the electromagnetic shielding effect and the 2-coil measurement system, the Meissner effect was used to reduce the harmonic voltage noise in the pickup coil. Comparing the double-sided measurement system using the new method to the 2-coil measurement system, the signal-to-noise ratio increases by 10 dB to 20 dB in the case of a J(c) • The noise in the pickup coil is reduced and the signal-to-noise ratio is improved in the frequency range from 100 Hz to 1000 Hz by using the Meissner effect. • The measurement bandwidth is increased, making it possible to conduct low-frequency measurement in the future by the double-sided measurement method. • The method provides an improvement direction for superconducting thin films with a high critical current density in the future. Elsevier 2023-03-02 /pmc/articles/PMC10017304/ /pubmed/36937815 http://dx.doi.org/10.1016/j.mex.2023.102087 Text en © 2023 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Method Article
Shao, Yunkai
Liu, Longxiang
Wang, Sansheng
Method to improve critical current density measurement of superconducting materials()
title Method to improve critical current density measurement of superconducting materials()
title_full Method to improve critical current density measurement of superconducting materials()
title_fullStr Method to improve critical current density measurement of superconducting materials()
title_full_unstemmed Method to improve critical current density measurement of superconducting materials()
title_short Method to improve critical current density measurement of superconducting materials()
title_sort method to improve critical current density measurement of superconducting materials()
topic Method Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10017304/
https://www.ncbi.nlm.nih.gov/pubmed/36937815
http://dx.doi.org/10.1016/j.mex.2023.102087
work_keys_str_mv AT shaoyunkai methodtoimprovecriticalcurrentdensitymeasurementofsuperconductingmaterials
AT liulongxiang methodtoimprovecriticalcurrentdensitymeasurementofsuperconductingmaterials
AT wangsansheng methodtoimprovecriticalcurrentdensitymeasurementofsuperconductingmaterials