Author: Huang Jijie Chen Li Jian Jie Tyler Kevin Li Leigang Wang Han Wang Haiyan
Publisher: IOP Publishing
E-ISSN: 1361-648X|28|2|25702-25708
ISSN: 0953-8984
Source: Journal of Physics: Condensed Matter, Vol.28, Iss.2, 2016-01, pp. : 25702-25708
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Abstract
Magnetic epitaxial (CoFe2O4)0.1(CeO2)0.9 nanocomposite layers were incorporated into superconducting FeSe0.1Te0.9 thin films as either a cap layer or a buffer layer. Both capped and buffered samples show an enhancement of the superconducting property compared to the reference sample without the incorporated layer, while the capped one shows the best pinning properties of all the samples. Specifically for the capped sample, the critical temperature &${{T}_{text{c}}}$ ; is ~12.5 K, while the self-field critical current density &$J_{text{c}}^{text{sf}}$ ; increases to as high as 1.20 MA cm−2 at 4 K. Its &$J_{text{c}}^{text{in-field}}$ ; value shows a slower decrease with increasing applied magnetic field, with the lowest power-law exponent
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