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Title: Development of very high Jc in Ba(Fe1-xCox)2As2 thin films grown on CaF2

Abstract

Ba(Fe1-xCox)2As2 is the most tunable of the Fe-based superconductors (FBS) in terms of acceptance of high densities of self-assembled and artificially introduced pinning centres which are effective in significantly increasing the critical current density, Jc. Moreover, FBS are very sensitive to strain, which induces an important enhancement in critical temperature,Tc, of the material. In this study we demonstrate that strain induced by the substrate can further improve Jc of both single and multilayer films by more than that expected simply due to the increase in Tc. The multilayer deposition of Ba(Fe1-xCox)2As2 on CaF2 increases the pinning force density (Fp=Jc x μ₀H) by more than 60% compared to a single layer film, reaching a maximum of 84 GN/m3 at 22.5 T and 4.2 K, the highest value ever reported in any 122 phase.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [1]
+ Show Author Affiliations
  1. Florida State Univ., Tallahassee, FL (United States)
  2. Univ. of Wisconsin-Madison, Madison, WI (United States); Gwangju Institute of Science and Technology, Gwangju (Republic of Korea)
  3. Univ. of Wisconsin-Madison, Madison, WI (United States)
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1222463
Grant/Contract Number:  
FG02-06ER46327
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 4; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; superconducting properties and materials; surfaces; interfaces and thin films

Citation Formats

Tarantini, C., Kametani, F., Lee, S., Jiang, J., Weiss, J. D., Jaroszynski, J., Hellstrom, E. E., Eom, C. B., and Larbalestier, D. C. Development of very high Jc in Ba(Fe1-xCox)2As2 thin films grown on CaF2. United States: N. p., 2014. Web. doi:10.1038/srep07305.
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Tarantini, C., Kametani, F., Lee, S., Jiang, J., Weiss, J. D., Jaroszynski, J., Hellstrom, E. E., Eom, C. B., & Larbalestier, D. C. Development of very high Jc in Ba(Fe1-xCox)2As2 thin films grown on CaF2. United States. https://doi.org/10.1038/srep07305
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Tarantini, C., Kametani, F., Lee, S., Jiang, J., Weiss, J. D., Jaroszynski, J., Hellstrom, E. E., Eom, C. B., and Larbalestier, D. C. Wed . "Development of very high Jc in Ba(Fe1-xCox)2As2 thin films grown on CaF2". United States. https://doi.org/10.1038/srep07305. https://www.osti.gov/servlets/purl/1222463.
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@article{osti_1222463,
title = {Development of very high Jc in Ba(Fe1-xCox)2As2 thin films grown on CaF2},
author = {Tarantini, C. and Kametani, F. and Lee, S. and Jiang, J. and Weiss, J. D. and Jaroszynski, J. and Hellstrom, E. E. and Eom, C. B. and Larbalestier, D. C.},
abstractNote = {Ba(Fe1-xCox)2As2 is the most tunable of the Fe-based superconductors (FBS) in terms of acceptance of high densities of self-assembled and artificially introduced pinning centres which are effective in significantly increasing the critical current density, Jc. Moreover, FBS are very sensitive to strain, which induces an important enhancement in critical temperature,Tc, of the material. In this study we demonstrate that strain induced by the substrate can further improve Jc of both single and multilayer films by more than that expected simply due to the increase in Tc. The multilayer deposition of Ba(Fe1-xCox)2As2 on CaF2 increases the pinning force density (Fp=Jc x μ₀H) by more than 60% compared to a single layer film, reaching a maximum of 84 GN/m3 at 22.5 T and 4.2 K, the highest value ever reported in any 122 phase.},
doi = {10.1038/srep07305},
journal = {Scientific Reports},
number = ,
volume = 4,
place = {United States},
year = {Wed Dec 03 00:00:00 EST 2014},
month = {Wed Dec 03 00:00:00 EST 2014}
}
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    Works referencing / citing this record:

    p-wave superconductivity in iron-based superconductors
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