In-Field Transport Properties at Grain Boundaries in BaHfO3-doped SmBa2Cu3Oy Bicrystal Films at Low Temperatures

Yuji Tsuchiya, Junya Akita, Yusuke Ichino, Shun Miura, Yutaka Yoshida

Research output: Contribution to journalArticle

Abstract

Higherature superconducting REBCO tapes are attractive for their high critical current density. Jc in the REBCO film is suppressed under magnetic fields and by grain boundaries. Our group has reported that artificial pinning centers (APC) enhance the Jc at the grain boundaries in the REBCO films at the liquid nitrogen temperature of 77 K. In this study, we have extended our previous work to a lower temperature since the usage of the REBCO tapes at a lower temperature and a high magnetic field is a recent development trend. Transport characteristics at grain boundaries in the REBCO films with and without APC are investigated at temperatures down to 4.2 K and at magnetic fields up to 9 T. The results show that the introduction of the APCs is effective to enhance the Jc at the grain boundaries at low temperatures and at the magnetic fields, especially around the matching field where the density of the APC is equal to that of vortices.

Original languageEnglish
Article number8662621
JournalIEEE Transactions on Applied Superconductivity
Volume29
Issue number5
DOIs
Publication statusPublished - Aug 1 2019

Fingerprint

Bicrystals
bicrystals
Transport properties
Grain boundaries
grain boundaries
transport properties
Magnetic fields
magnetic fields
tapes
Temperature
Superconducting tapes
liquid nitrogen
Liquid nitrogen
critical current
Tapes
vortices
current density
trends
Vortex flow
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

In-Field Transport Properties at Grain Boundaries in BaHfO3-doped SmBa2Cu3Oy Bicrystal Films at Low Temperatures. / Tsuchiya, Yuji; Akita, Junya; Ichino, Yusuke; Miura, Shun; Yoshida, Yutaka.

In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 8662621, 01.08.2019.

Research output: Contribution to journalArticle

@article{f1a25fc6515c4703aec8402c28a6c85f,
title = "In-Field Transport Properties at Grain Boundaries in BaHfO3-doped SmBa2Cu3Oy Bicrystal Films at Low Temperatures",
abstract = "Higherature superconducting REBCO tapes are attractive for their high critical current density. Jc in the REBCO film is suppressed under magnetic fields and by grain boundaries. Our group has reported that artificial pinning centers (APC) enhance the Jc at the grain boundaries in the REBCO films at the liquid nitrogen temperature of 77 K. In this study, we have extended our previous work to a lower temperature since the usage of the REBCO tapes at a lower temperature and a high magnetic field is a recent development trend. Transport characteristics at grain boundaries in the REBCO films with and without APC are investigated at temperatures down to 4.2 K and at magnetic fields up to 9 T. The results show that the introduction of the APCs is effective to enhance the Jc at the grain boundaries at low temperatures and at the magnetic fields, especially around the matching field where the density of the APC is equal to that of vortices.",
author = "Yuji Tsuchiya and Junya Akita and Yusuke Ichino and Shun Miura and Yutaka Yoshida",
year = "2019",
month = "8",
day = "1",
doi = "10.1109/TASC.2019.2903469",
language = "English",
volume = "29",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "5",

}

TY - JOUR

T1 - In-Field Transport Properties at Grain Boundaries in BaHfO3-doped SmBa2Cu3Oy Bicrystal Films at Low Temperatures

AU - Tsuchiya, Yuji

AU - Akita, Junya

AU - Ichino, Yusuke

AU - Miura, Shun

AU - Yoshida, Yutaka

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Higherature superconducting REBCO tapes are attractive for their high critical current density. Jc in the REBCO film is suppressed under magnetic fields and by grain boundaries. Our group has reported that artificial pinning centers (APC) enhance the Jc at the grain boundaries in the REBCO films at the liquid nitrogen temperature of 77 K. In this study, we have extended our previous work to a lower temperature since the usage of the REBCO tapes at a lower temperature and a high magnetic field is a recent development trend. Transport characteristics at grain boundaries in the REBCO films with and without APC are investigated at temperatures down to 4.2 K and at magnetic fields up to 9 T. The results show that the introduction of the APCs is effective to enhance the Jc at the grain boundaries at low temperatures and at the magnetic fields, especially around the matching field where the density of the APC is equal to that of vortices.

AB - Higherature superconducting REBCO tapes are attractive for their high critical current density. Jc in the REBCO film is suppressed under magnetic fields and by grain boundaries. Our group has reported that artificial pinning centers (APC) enhance the Jc at the grain boundaries in the REBCO films at the liquid nitrogen temperature of 77 K. In this study, we have extended our previous work to a lower temperature since the usage of the REBCO tapes at a lower temperature and a high magnetic field is a recent development trend. Transport characteristics at grain boundaries in the REBCO films with and without APC are investigated at temperatures down to 4.2 K and at magnetic fields up to 9 T. The results show that the introduction of the APCs is effective to enhance the Jc at the grain boundaries at low temperatures and at the magnetic fields, especially around the matching field where the density of the APC is equal to that of vortices.

UR - http://www.scopus.com/inward/record.url?scp=85064698544&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064698544&partnerID=8YFLogxK

U2 - 10.1109/TASC.2019.2903469

DO - 10.1109/TASC.2019.2903469

M3 - Article

VL - 29

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 5

M1 - 8662621

ER -