李晓娜

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:材料科学与工程学院

学科:材料物理与化学

办公地点:三束实验室2号楼302室

联系方式:0411-84708380-8302

电子邮箱:lixiaona@dlut.edu.cn

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-Fe3Si8M ternary alloy thin films prepared by magnetron sputtering

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论文类型:期刊论文

发表时间:2012-01-01

发表刊物:Wuli Xuebao/Acta Physica Sinica

收录刊物:PKU、ISTIC、Scopus

卷号:61

期号:24

ISSN号:10003290

摘要:-FeSi2 is a promising environment-friendly semiconductor material. However it is difficult to obtain pure phase for such a line compound. To investigate the solubilities for a third alloying elements, in this work Fe3Si8M (M = B, Cr, Ni, Co) ternary alloys are designed based on the cluster-plus-glue-atom-model. Thin films are then prepared using magnetron sputtering. The as-deposited films are all amorphous and become crystallized after annealing at 850   for 4 h. It is shown that samples alloyed with third components Cr and B can reach single    phase easily. However, the main phase is    phase and the films tend to exhibit metallic characteristics while alloyed with Co. Of these films, the Fe2.7Si8.4B0.9 film presents the most prominent semiconductor performance, and it has a resistivity of 0.17     cm, a sheet carrier concentration of 2.8    1020 cm-3, a mobility of 0.13 cm2/V  s and a band-gap width of 0.65 eV. It is confirmed that doping a proper third component can expand the    phase zone, exhibiting a similar semiconductor property to that of binary   -FeSi2. ? 2012 Chinese Physical Society.