Role of additives (X = Ti, Zr) in phase formation and thermal stability of Fe-X-N thin films

被引：13
作者：
Tayal, Akhil [1 ]
Gupta, Mukul [1 ]
Gupta, Ajay [1 ]
Horisberger, M. [2 ]
Stahn, J. [3 ]
机构：
[1] UGC DAE Consortium Sci Res, Indore 452001, India
[2] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland
[3] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
来源：
THIN SOLID FILMS | 2013年 / 536卷
关键词：
Iron Nitride; Thin films; Reactive sputtering; Thermal stability; Soft magnetic films; X-ray diffraction; Magnetic properties; SOFT-MAGNETIC PROPERTIES; IRON NITRIDE FILMS; FETAN FILMS; NANOCRYSTALLINE FERROMAGNETS; NITROGEN-CONCENTRATION; STRUCTURAL-PROPERTIES; ELECTRONIC-STRUCTURE; MOMENT; FETIN; MICROSTRUCTURE;
D O I：
10.1016/j.tsf.2013.03.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work we studied the role of additive elements (X = Ti, Zr) on the formation of iron nitride (Fe-N) phases. Amongst all elements, Zr and Ti have the highest affinity towards nitrogen. We added 3.5 at.% Zr, 3.3 at.% and 6.4 at.% Ti in Fe, and prepared a series of Fe-X-N thin films using magnetron sputtering by varying the nitrogen partial pressure (R-N2) ranging between 0 and 100%, in steps of 10%. Structural and magnetic properties, and thermal stability of the resulting Fe-X-N thin films were studied. It was found that while the addition of 3.3 at.% Ti results in an enhanced nitrogen incorporation in the Fe-N system, the additions of 6.4 at.% Ti or 3.5 at.% Zr actually results in depletion of nitrogen in the Fe-N system. Further, it was observed that the structural and magnetic stability of the thin films improves significantly with Ti (6.4 at.%) or Zr (3.5 at.%) additions as compared to Ti (3.3 at.%) addition. We find when added in sufficient amount, presence of element X in the grain boundary region leads to a good structural and magnetic stability of Fe-X-N thin films. On the basis of the obtained results, the role of X-N affinity, atomic size of element X, and its amount is discussed in phase formation and thermal stability of Fe-X-N thin films. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：39 / 49
页数：11
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