The 57Fe hyperfine interactions in the iron bearing phases in different fragments of Chelyabinsk LL5 meteorite: a comparative study using Mossbauer spectroscopy with a high velocity resolution

被引：10
|
作者：
Maksimova, A. A. [1 ]
Oshtrakh, M. I. [1 ,2 ]
Petrova, E. V. [1 ]
Grokhovsky, V. I. [1 ]
Semionkin, V. A. [1 ,2 ]
机构：
[1] Ural Fed Univ, Dept Phys Tech & Devices Qual Control, Inst Phys & Technol, Ekaterinburg 620002, Russia
[2] Ural Fed Univ, Inst Phys & Technol, Dept Expt Phys, Ekaterinburg 620002, Russia
来源：
HYPERFINE INTERACTIONS | 2015年 / 231卷 / 1-3期
关键词：
Mossbauer spectroscopy; Chelyabinsk LL5 meteorite fragments; Lithology; Hyperfine interactions; X-RAY-DIFFRACTION; ORDINARY CHONDRITES; M2; SITES; MINERALS; FALLEN; INDIA; JILIN; M1;
D O I：
10.1007/s10751-014-1115-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
A comparative study of the Fe-57 hyperfine interactions in iron bearing phases of Chelyabinsk LL5 ordinary chondrite fragments with different lithology was carried out using Mossbauer spectroscopy with a high velocity resolution. The obtained values of hyperfine parameters for the same iron bearing phases in different fragments demonstrated small variations. These differences were related to small variations in the Fe local microenvironments in both M1 and M2 sites in olivine and pyroxene, to deviation from stoichiometry in troilite with increase in Fe vacancies and to differences in Ni concentrations in alpha-Fe(Ni, Co) and gamma-Fe(Ni, Co) phases in the metal grains. The obtained differences may indicate a breccia structure of Chelyabinsk LL5 ordinary chondrite.
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收藏
页码：79 / 87
页数：9
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