Fe and N self-diffusion in amorphous FeN: A SIMS and neutron reflectivity study

被引：20

作者：

Chakravarty, S. ^{[1
]}

Gupta, M. ^{[1
]}

Gupta, A. ^{[1
]}

Rajagopalan, S. ^{[2
]}

Balamurugan, A. K. ^{[2
]}

Tyagi, A. K. ^{[2
]}

Deshpande, U. P. ^{[1
]}

Horisberger, M. ^{[3
,4
]}

Gutberlet, T. ^{[3
,4
]}

机构：

[1] UGC DAE Consortium Sci Res, Indore 452017, Madhya Pradesh, India

[2] Indira Gandhi Ctr Atom Res, MSD, Surface Sci Sect, Kalpakkam 603102, Tamil Nadu, India

[3] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

ACTA MATERIALIA | 2009年 / 57卷 / 04期

关键词：

Amorphous FeN; Self-diffusion; Mass spectroscopy; Neutron reflectivity; IMPURITY DIFFUSION; METALLIC GLASSES; ALLOYS; FE40NI40B20; FILMS;

D O I：

10.1016/j.actamat.2008.11.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Simultaneous self-diffusion Measurements of Fe and N in amorphous Fe86N14 alloy using secondary ion mass spectroscopy (SIMS) arc reported. In addition, neutron reflectivity (NR) was used to study the Fe self-diffusion in the same compound. The broadening of a tracer layer of (Fe86N14)-Fe-57-N-15 sandwiched between Fe86N14 layers was observed by SIMS measurements after the annealing of films at different temperatures. A decay of the Bragg peak intensity after isothermal annealing was also observed in [Fes(86)N(14)/Fe-57(86) N-14](10) multilayers in NR. It was observed by SIMS measurements that Fe diffusion was about 2 orders of magnitude smaller than N, even though the structural relaxation times for Fe and N were almost identical. This is an important result, indicating that the relaxation time of diffusion is basically driven by the relaxation of the structure itself. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1263 / 1271

页数：9

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