Magneto-optical visualization of vortices penetration into Ba(Fe1.8Co0.2)As2

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Show simple item record Lin, Zhi Wei en_US Zhu, Jianguo en_US Guo, Youguang en_US Li, Yongjian en_US Wang, Shuhong en_US Zhang, Y en_US Xu, Ke en_US Cai, Chuan en_US
dc.contributor.editor en_US 2012-02-02T10:57:04Z 2012-02-02T10:57:04Z 2010 en_US
dc.identifier 2010000678 en_US
dc.identifier.citation Lin Zhi Wei (Jack) et al. 2010, 'Magneto-optical visualization of vortices penetration into Ba(Fe1.8Co0.2)As2', American Institute of Physics, vol. 107, no. 9, pp. E155-1-E155-3. en_US
dc.identifier.issn 0021-8979 en_US
dc.identifier.other C1 en_US
dc.description.abstract Vortices penetration into oxygen-free superconducting compounds FeAs-122 system is of interest in understanding superconductivity. This work studies the vortices motion in Ba(Fe1.8Co0.2)As2 single crystal by means of magneto-optical imaging technique in zero field cooled and field cooled conditions. The captured magneto-optical images and corresponding flux profiles show that, at zero field cooled condition, vortices penetrate into the crystal from the edges as external magnetic field increases. A vortices-free region is observed at the center of sample as applied field is less than full penetration field. In field cooled condition, the introduced vortices leave the sample at the edges as field decreases and polarization of the vortices at the edges are opposite as decreasing field approaches to zero. The pinning strength decreases with increasing temperature. The observed vortex behavior is very similar to that in high Tc superconducting materials with strong pinning strength. en_US
dc.language en_US
dc.publisher American Institute of Physics en_US
dc.relation.hasversion Accepted manuscript version en_US
dc.rights The following article has been submitted to/accepted by Journal of Applied Physics. After it is published, it will be found at en_US
dc.title Magneto-optical visualization of vortices penetration into Ba(Fe1.8Co0.2)As2 en_US
dc.parent Journal of Applied Physics en_US
dc.journal.volume 107 en_US
dc.journal.number 9 en_US
dc.publocation Melville, USA en_US
dc.identifier.startpage E155-1 en_US
dc.identifier.endpage E155-3 en_US FEIT.School of Elec, Mech and Mechatronic Systems en_US
dc.conference Verified OK en_US
dc.for 099900 en_US
dc.personcode 020518 en_US
dc.personcode 910870 en_US
dc.personcode 990817 en_US
dc.personcode 106617 en_US
dc.personcode 102910 en_US
dc.personcode 0000028137 en_US
dc.personcode 0000065566 en_US
dc.personcode 0000065567 en_US
dc.percentage 100 en_US Other Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords barium compounds, cobalt compounds, ferromagnetic materials, flux pinning, iron compounds, magneto-optical effects, penetration depth (superconductivity), polarisation, superconducting materials, vortices en_US
utslib.copyright.status Open Access 2015-04-15 12:23:47.074767+10

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