THICKNESS DEPENDENCE ON SUPERCONDUCTING AND STRUCTURAL PROPERTIES OF THIN FeSe0,5Te0,5 FILMS

被引:0
|
作者
Rodriguez, Oscar [1 ,2 ]
机构
[1] Univ Nacl Colombia, Dept Fis, Grp Supercond & Nuevos Mat, Bogota, Colombia
[2] Univ Nacl Colombia, Dept Quim, Grp Supercond & Nuevos Mat, Bogota, Colombia
来源
MOMENTO-REVISTA DE FISICA | 2012年 / 45期
关键词
Iron based superconductors; thin films; iron chalcogenides;
D O I
暂无
中图分类号
O59 [应用物理学];
学科分类号
摘要
In the present work the influence of the layer thickness of FeSe0,5Te0,5 on the crystalline and s l perconducting properties of films deposited on iron (Fe) buffered 21.4-g-zil204. substrates by pulsed laser deposition (r-'1_,L3) is investigated. The superconclucLing layer thicknesses of the films prepared. are 5 5 rim and 134n..m. The film with thinner superconducting lay'er shows bet ter texture. properties (oriented growth.) and lower surface roughness (1=t1VIS); -verified by X ray diffraction and .A_FaVI respectively. This film shows a sharp transition to the superconducting state and a higher critical temperature in contradiction to the thicker one_ The thickness effect on superconducting lattice strain is discussed.
引用
收藏
页码:11 / 20
页数:10
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