Mossbauer spectral characteristics of nanostructured Pd-Fe films

被引:9
作者
Papaefthymiou, GC [1 ]
Bryden, KJ
Ying, JY
机构
[1] Villanova Univ, Dept Phys, Villanova, PA 19085 USA
[2] MIT, Dept Chem Engn, Cambridge, MA 02139 USA
基金
美国国家科学基金会;
关键词
Pd-Fe alloys; nanostructured materials; Mossbauer spectroscopy; hyperfine fields;
D O I
10.1016/S0921-4526(01)01031-6
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The Mossbauer spectra of nanostructured Pd-Fe solid solutions with 10, 20 and 30 at% Fe are reported. The nanostructured alloys were in the form of freestanding films obtained via pulsed electrodeposition synthesis on titanium substrates. As-deposited and thermally annealed samples were examined, Finite-size effects in the nanostructured films were observed and a magnetic grain reorientation in the as-deposited films was detected upon annealing. The Mossbauer data corroborate XRD and TEM measurements in which the introduction of iron into palladium contributes to the thermal stability of the nanostructured state against grain growth at high temperatures. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:279 / 284
页数:6
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