On the origin of discontinuity of the hyperfine fields at 57Fe nuclei in bulk iron and aerosol Fe nanoparticles

被引：2
|
作者：
Petrov, Yu. I. [1 ]
Shafranovsky, E. A. [1 ]
Casas, Ll. [2 ]
Molins, E. [3 ]
机构：
[1] Russian Acad Sci, NN Semenov Chem Phys Inst, Moscow 119991, Russia
[2] Univ Autonoma Barcelona, Dept Geol, Bellaterra 08193, Spain
[3] CSIC, ICMAB, Bellaterra 08193, Spain
来源：
PHYSICS LETTERS A | 2011年 / 375卷 / 11期
基金：
俄罗斯基础研究基金会;
关键词：
Hyperfine field distribution; Iron; Aerosol nanoparticles; Domain structure; Mossbauer spectroscopy; OVERLAPPED MOSSBAUER-SPECTRA; DISTRIBUTIONS; ALLOYS;
D O I：
10.1016/j.physleta.2011.02.018
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Advancing the early work in which a discontinuity of hyperfine fields at Fe-57 nuclei in bulk iron and in aerosol Fe nanoparticles has been revealed by analyzing their Mossbauer spectra the present Letter evidences that the existence of several peaks in the hyperfine distribution (HFD) for bulk Fe is caused with the internal magnetic fields owing to its multidomain structure whereas aerosol Fe nanoparticles are single-domain and show only a unique peak in HFD. This argument has been corroborated by transformation of the HFD pattern for Fe foil after applying the external magnetic field of 0.03 T. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1421 / 1425
页数：5
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