Science of Advanced Materials, ( ISI ), Volume (6), No (7), Year (2014-7) , Pages (1650-1654)

Title : ( Simulation of light C4+ ion irradiation and its significant enhancement to the critical current density in Ba(Fe1xNix)2As2 single crystals )

Authors: M. Shahbazi , X.L.Wang , M. Ionescu , Shaban Reza Ghorbani , S.X.Dou , K. Y. Choi ,

Citation: BibTeX | EndNote

In this work, we analyse the influence of C4+ irradiation with ion flounce of 3×10 12 up to 2.3×10 15 ion•cm−2 on significant enhancement of the critical current density, Jc, in BaFe1.9Ni0.1As2 single crystals. Jc was increased from 0.61×105 up to 0.94×105 A/cm2 at T=10 K and H=0.5 T. BaFe1.9Ni0.1As2 single crystals with and without the C4+-irradiation were characterized by magneto-transport and magnetic measurements up to 13 T over a wide range of temperatures below and above the superconducting critical temperature, Tc. It is found that the C4+-irradiation causes little change in Tc, but it can greatly enhance the in-field critical current density by a factor of up to 1.5. Higher dose of C4+ions, causes further Jc enhancement at T=10 K. furthermore, flux jumping completely disappeared at T=2 K after second C4+-irradiation. Our Monte Carlo simulation results show that all the C4+ions end up in a well defined layer, causing extended defects and vacancies at the layer, but few defects elsewhere on the irradiation paths. Furthermore, the normal state resistivity is enhanced by the light C4+-irradiation, while the upper critical field, Hc2 , the irreversibility field, Hirr, and Tc were affected very little.

Keywords

, Fe-based superconductor, C4+-irradiation, BaFe1.9Ni0.1As2 single
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@article{paperid:1042177,
author = {M. Shahbazi and X.L.Wang and M. Ionescu and Ghorbani, Shaban Reza and S.X.Dou and K. Y. Choi},
title = {Simulation of light C4+ ion irradiation and its significant enhancement to the critical current density in Ba(Fe1xNix)2As2 single crystals},
journal = {Science of Advanced Materials},
year = {2014},
volume = {6},
number = {7},
month = {July},
issn = {1947-2935},
pages = {1650--1654},
numpages = {4},
keywords = {Fe-based superconductor;C4+-irradiation; BaFe1.9Ni0.1As2 single crystals},
}

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%0 Journal Article
%T Simulation of light C4+ ion irradiation and its significant enhancement to the critical current density in Ba(Fe1xNix)2As2 single crystals
%A M. Shahbazi
%A X.L.Wang
%A M. Ionescu
%A Ghorbani, Shaban Reza
%A S.X.Dou
%A K. Y. Choi
%J Science of Advanced Materials
%@ 1947-2935
%D 2014

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