In-grain phase separation and structural ordering in Fe-Ga alloys seen from reciprocal space

被引：6
|
作者：
Balagurov, A. M. [1 ,2 ]
Chernyshov, D. Yu [3 ,6 ]
Bosak, A. A. [4 ]
Bobrikov, I. A. [1 ]
Sumnikov, S. V. [1 ]
Golovin, I. S. [5 ]
机构：
[1] Joint Inst Nucl Res, Dubna, Russia
[2] Lomonosov Moscow State Univ, Moscow, Russia
[3] Swiss Norwegian Beam Lines ESRF, 71 Ave Martyrs, Grenoble, France
[4] ESRF European Synchrotron, 71 Ave Martyrs, Grenoble, France
[5] Natl Univ Sci & Technol MISIS, Moscow, Russia
[6] Peter Great St Petersburg Polytech Univ, St Petersburg, Russia
来源：
INTERMETALLICS | 2021年 / 128卷
基金：
俄罗斯科学基金会;
关键词：
Synchrotron radiation; Ordered structures; Fe-Ga alloys; DIFFRACTOMETER;
D O I：
10.1016/j.intermet.2020.107016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Single crystal synchrotron diffraction was used for detailed analysis of ordering effects in alloys with a nominal composition of Fe80.5Ga19.5 and Fe73.1Ga26.9. The first composition manifests a disordered average A2 structure with local fluctuations resembling a D0(3) ordering motif in the lengthscales of similar to 50 angstrom. In Fe73.1Ga26.9 alloy ordered over a long range, a D0(3) matrix coexists with similar to 100 angstrom inclusions of a new ordered phase, presumably hexagonal with lattice parameters a approximate to root 8a(0) and c approximate to root 12a(0), where a(0) = 2.87 angstrom is the unit cell dimension of body-centered cubic Fe.
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收藏
页数：4
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