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.

引用

页数：4

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