Enhancement of In-Field Critical Current Density of BaZrO3-Added (Y, Gd) BCO-Coated Conductors by Using a Multi-Coating TFA-MOD Method

Takumi Suzuki, Syunsuke Oomura, Kazutaka Imamura, Masayoshi Inoue, Kohei Higashikawa, Satoshi Awaji, Koichi Nakaoka, Teruo Izumi, Takanobu Kiss

Research output: Contribution to journalArticle

Abstract

We have investigated the in-field critical current properties in BaZrO 3 -added (Y, Gd) Ba 2 Cu 3 O 7-δ (YGdBCO)-coated conductor fabricated by using a multi-coating trifluoroacetates metal-organic deposition (MOD) method. We compared these properties with EuBCO-coated conductor fabricated by the pulsed laser deposition (PLD) method. The sample using the 30-nm once-coat-layer-thickness d once shows superior in-field J c down to 4.2 K than that of the previous standard coating using 170-nm-thick layer for each coating. From the analysis of E-J characteristics, an analytical expression for J c as a function T and B has been derived. It was confirmed that the high J c region in sample with d once = 30 nm is widely spread in high-temperature and high-magnetic-field region. By comparison with the J c properties of the BaHfO 3 -added PLD CCs, the minimum J c , which is estimated from magnetic field angle dependence, shows even higher value up to 5 T of magnetic field at 65 K and up to 3 T at 77 K. From these results, the new MOD-YGdBCO process using the thin once-coat-layer-thickness is very promising for the practically important mid field region such as 3 to 5 T.

Original languageEnglish
Article number8197366
JournalIEEE Transactions on Applied Superconductivity
Volume28
Issue number3
DOIs
Publication statusPublished - Apr 1 2018

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metal coatings
Metal coatings
critical current
conductors
Pulsed laser deposition
Magnetic fields
current density
pulsed laser deposition
augmentation
magnetic fields
coatings
Trifluoroacetic Acid
Coatings
Critical currents
Metals
metals
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Enhancement of In-Field Critical Current Density of BaZrO3-Added (Y, Gd) BCO-Coated Conductors by Using a Multi-Coating TFA-MOD Method. / Suzuki, Takumi; Oomura, Syunsuke; Imamura, Kazutaka; Inoue, Masayoshi; Higashikawa, Kohei; Awaji, Satoshi; Nakaoka, Koichi; Izumi, Teruo; Kiss, Takanobu.

In: IEEE Transactions on Applied Superconductivity, Vol. 28, No. 3, 8197366, 01.04.2018.

Research output: Contribution to journalArticle

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