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Nanostructured epitaxial thin films of Fe-based superconductors with enhanced superconducting properties

Published online by Cambridge University Press:  13 August 2012

P. Mele ,
K. Matsumoto ,
H. Nagayoshi ,
K. Fujita ,
Y. Yoshida ,
Y. Ichino ,
T. Kiss ,
A. Ichinose ,
M. Mukaida  and
B. Maiorov
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P. Mele
Affiliation:
Institute for Sustainable Science and Development, Hiroshima University, Kagamiyama 1-3-1 Higashi-Hiroshima 739-8530, Japan
K. Matsumoto
Affiliation:
Department of Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan JST-TRIP, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
H. Nagayoshi
Affiliation:
Department of Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan
K. Fujita
Affiliation:
Department of Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan
Y. Yoshida
Affiliation:
Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikikusa-ku, Nagoya 464-8603, Japan JST-TRIP, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
Y. Ichino
Affiliation:
Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikikusa-ku, Nagoya 464-8603, Japan JST-TRIP, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
T. Kiss
Affiliation:
Department of Electrical and Electronic Systems Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 812-8581, Japan JST-TRIP, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
A. Ichinose
Affiliation:
Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanazawa 240-0196, Japan JST-TRIP, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
M. Mukaida
Affiliation:
Department of Materials Science and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 812-8581, Japan JST-TRIP, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
B. Maiorov
Affiliation:
MPA-NHMFL and MPA-STC, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
F.F. Balakirev
Affiliation:
MPA-NHMFL and MPA-STC, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
S.A. Baily
Affiliation:
MPA-NHMFL and MPA-STC, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
L. Civale
Affiliation:
MPA-NHMFL and MPA-STC, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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Abstract

Epitaxial Fe-Te-Se thin films were deposited by pulsed laser deposition at 250 ~ 600 °C on SrTiO3 (100, STO), MgO (100), LaAlO3 (100, LAO) and CaF2 (100) single crystal substrates. Best superconducting film was grown on CaF2: Tconset = 20.0 K and Tc0 = 16.18 K with Tdep = 300 °C, 45000 pulses, 3 Hz. The critical current density Jc at 4.2 K was 0.41×106A/cm2 at 0 T and 0.23×106 A/cm2 at 9 T. Angular dependence of Jc showed broad c-axis correlated peak when B ≥ 3 T.

Keywords

superconductingthin filmlaser ablation
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1434: Symposium I – Recent Advances in Superconductors, Novel Compounds and High-Tc Materials , 2013 , mrss12-1434-i11-01
Copyright
Copyright © Materials Research Society 2012

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References

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