Effects of magnetic field and temperature on the critical current hysteresis in tl-ca-ba-cu-o thin films

Hung Lun Chang; Jenh Yih Juang; Sy Hwang Liou; Tzeng Ming Uen; Yih Shun Gou

doi:10.1143/JJAP.29.L2037

Effects of magnetic field and temperature on the critical current hysteresis in tl-ca-ba-cu-o thin films

Hung Lun Chang, Jenh Yih Juang, Sy Hwang Liou, Tzeng Ming Uen, Yih Shun Gou

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The behavior of the critical current density of Tl-Ca-Ba-Cu-O superconducting thin films in a cycling magnetic field was investigated. The hysteresis of the transport J_cmanifested similar features to those found in polycrystalline Y-Ba-Cu-O and granular Nb, Al thin films in zero-field cooling. However, a novel result of the transport J_cin field-cooled samples has been observed. The results were attributed to the presence of a saturated trapped magnetic flux in the weak-link network. The effects of temperature on both the trapped flux and the transport J_csuggest the existence of various states of the trapped flux in the Tl-based superconducting thin films.

Original language	English (US)
Pages (from-to)	2037-2040
Number of pages	4
Journal	Japanese Journal of Applied Physics
Volume	29
Issue number	11
DOIs	https://doi.org/10.1143/JJAP.29.L2037
State	Published - Nov 1990

Keywords

Critical current
Flux trapping
Hysteresis
Tl-Ca-Ba-Cu-O thin films

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.29.L2037

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title = "Effects of magnetic field and temperature on the critical current hysteresis in tl-ca-ba-cu-o thin films",

abstract = "The behavior of the critical current density of Tl-Ca-Ba-Cu-O superconducting thin films in a cycling magnetic field was investigated. The hysteresis of the transport Jcmanifested similar features to those found in polycrystalline Y-Ba-Cu-O and granular Nb, Al thin films in zero-field cooling. However, a novel result of the transport Jcin field-cooled samples has been observed. The results were attributed to the presence of a saturated trapped magnetic flux in the weak-link network. The effects of temperature on both the trapped flux and the transport Jcsuggest the existence of various states of the trapped flux in the Tl-based superconducting thin films.",

keywords = "Critical current, Flux trapping, Hysteresis, Tl-Ca-Ba-Cu-O thin films",

author = "Chang, {Hung Lun} and Juang, {Jenh Yih} and Liou, {Sy Hwang} and Uen, {Tzeng Ming} and Gou, {Yih Shun}",

year = "1990",

month = nov,

doi = "10.1143/JJAP.29.L2037",

language = "English (US)",

volume = "29",

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journal = "Japanese Journal of Applied Physics",

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T1 - Effects of magnetic field and temperature on the critical current hysteresis in tl-ca-ba-cu-o thin films

AU - Chang, Hung Lun

AU - Juang, Jenh Yih

AU - Liou, Sy Hwang

AU - Uen, Tzeng Ming

AU - Gou, Yih Shun

PY - 1990/11

Y1 - 1990/11

N2 - The behavior of the critical current density of Tl-Ca-Ba-Cu-O superconducting thin films in a cycling magnetic field was investigated. The hysteresis of the transport Jcmanifested similar features to those found in polycrystalline Y-Ba-Cu-O and granular Nb, Al thin films in zero-field cooling. However, a novel result of the transport Jcin field-cooled samples has been observed. The results were attributed to the presence of a saturated trapped magnetic flux in the weak-link network. The effects of temperature on both the trapped flux and the transport Jcsuggest the existence of various states of the trapped flux in the Tl-based superconducting thin films.

AB - The behavior of the critical current density of Tl-Ca-Ba-Cu-O superconducting thin films in a cycling magnetic field was investigated. The hysteresis of the transport Jcmanifested similar features to those found in polycrystalline Y-Ba-Cu-O and granular Nb, Al thin films in zero-field cooling. However, a novel result of the transport Jcin field-cooled samples has been observed. The results were attributed to the presence of a saturated trapped magnetic flux in the weak-link network. The effects of temperature on both the trapped flux and the transport Jcsuggest the existence of various states of the trapped flux in the Tl-based superconducting thin films.

KW - Critical current

KW - Flux trapping

KW - Hysteresis

KW - Tl-Ca-Ba-Cu-O thin films

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Effects of magnetic field and temperature on the critical current hysteresis in tl-ca-ba-cu-o thin films

Abstract

Keywords

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