Fabrication of cobalt-doped SrFe2As2 superconducting thin films

Soon Gil Jung; Eun Mi Choi; N. H. Lee; Young Seung Kwon; W. N. Kang; D. H. Kim; Myung Hwa Jung; Sung Ik Lee; Liling Sun

doi:10.1016/j.physc.2009.11.022

Fabrication of cobalt-doped SrFe₂As₂ superconducting thin films

Soon Gil Jung, Eun Mi Choi, N. H. Lee, Young Seung Kwon, W. N. Kang, D. H. Kim, Myung Hwa Jung, Sung Ik Lee, Liling Sun

Department of Physics and Chemistry

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

1 Scopus citations

Abstract

We have fabricated Co-doped bilayered SrFe₂As₂ thin films on Al₂O₃ (0 0 0 1) and LaAlO₃ (0 0 1) substrates by using a pulsed laser deposition (PLD) technique with a 248-nm-wavelength KrF excimer laser. In order to fabricate Co-doped SrFe ₂As₂ thin films, we used homemade target with an As-rich phase. We tried to find optimum growth condition by changing various experimental conditions, such as substrate temperature and laser energy density. The superconducting transition temperatures were influenced by growth temperature, but hardly affected by laser energy density. The best sample showed the Tc of ∼20 K with a narrow superconducting transition width of 2.2 K.

Original language	English
Pages (from-to)	S511-S512
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.11.022
State	Published - Dec 2010

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) Grant funded by the Korea Government (MEST, No. R01-2008-000-20586-0 ) and by a Grant ( R-2006-1-248 ) from Electric Power Industry Technology Evaluation and Planning (ETEP), Republic of Korea.

Keywords

Co-doped SrFeAs
Iron-based superconductor
Pulsed laser deposition
Thin film

Access to Document

10.1016/j.physc.2009.11.022

Cite this

@article{f563134172514b0190758db42a567197,

title = "Fabrication of cobalt-doped SrFe2As2 superconducting thin films",

abstract = "We have fabricated Co-doped bilayered SrFe2As2 thin films on Al2O3 (0 0 0 1) and LaAlO3 (0 0 1) substrates by using a pulsed laser deposition (PLD) technique with a 248-nm-wavelength KrF excimer laser. In order to fabricate Co-doped SrFe 2As2 thin films, we used homemade target with an As-rich phase. We tried to find optimum growth condition by changing various experimental conditions, such as substrate temperature and laser energy density. The superconducting transition temperatures were influenced by growth temperature, but hardly affected by laser energy density. The best sample showed the Tc of ∼20 K with a narrow superconducting transition width of 2.2 K.",

keywords = "Co-doped SrFeAs, Iron-based superconductor, Pulsed laser deposition, Thin film",

author = "Jung, {Soon Gil} and Choi, {Eun Mi} and Lee, {N. H.} and Kwon, {Young Seung} and Kang, {W. N.} and Kim, {D. H.} and Jung, {Myung Hwa} and Lee, {Sung Ik} and Liling Sun",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) Grant funded by the Korea Government (MEST, No. R01-2008-000-20586-0 ) and by a Grant ( R-2006-1-248 ) from Electric Power Industry Technology Evaluation and Planning (ETEP), Republic of Korea.",

year = "2010",

month = dec,

doi = "10.1016/j.physc.2009.11.022",

language = "English",

volume = "470",

pages = "S511--S512",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

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T1 - Fabrication of cobalt-doped SrFe2As2 superconducting thin films

AU - Jung, Soon Gil

AU - Choi, Eun Mi

AU - Lee, N. H.

AU - Kwon, Young Seung

AU - Kang, W. N.

AU - Kim, D. H.

AU - Jung, Myung Hwa

AU - Lee, Sung Ik

AU - Sun, Liling

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) Grant funded by the Korea Government (MEST, No. R01-2008-000-20586-0 ) and by a Grant ( R-2006-1-248 ) from Electric Power Industry Technology Evaluation and Planning (ETEP), Republic of Korea.

PY - 2010/12

Y1 - 2010/12

N2 - We have fabricated Co-doped bilayered SrFe2As2 thin films on Al2O3 (0 0 0 1) and LaAlO3 (0 0 1) substrates by using a pulsed laser deposition (PLD) technique with a 248-nm-wavelength KrF excimer laser. In order to fabricate Co-doped SrFe 2As2 thin films, we used homemade target with an As-rich phase. We tried to find optimum growth condition by changing various experimental conditions, such as substrate temperature and laser energy density. The superconducting transition temperatures were influenced by growth temperature, but hardly affected by laser energy density. The best sample showed the Tc of ∼20 K with a narrow superconducting transition width of 2.2 K.

AB - We have fabricated Co-doped bilayered SrFe2As2 thin films on Al2O3 (0 0 0 1) and LaAlO3 (0 0 1) substrates by using a pulsed laser deposition (PLD) technique with a 248-nm-wavelength KrF excimer laser. In order to fabricate Co-doped SrFe 2As2 thin films, we used homemade target with an As-rich phase. We tried to find optimum growth condition by changing various experimental conditions, such as substrate temperature and laser energy density. The superconducting transition temperatures were influenced by growth temperature, but hardly affected by laser energy density. The best sample showed the Tc of ∼20 K with a narrow superconducting transition width of 2.2 K.

KW - Co-doped SrFeAs

KW - Iron-based superconductor

KW - Pulsed laser deposition

KW - Thin film

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DO - 10.1016/j.physc.2009.11.022

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