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Local structure study of Fe dopants in Ni-deficit Ni3Al alloys

Local structure study of Fe dopants in Ni-deficit Ni3Al alloys

Authors :
Ivanovski, Valentin N.
Umićević, Ana
Belošević-Čavor, Jelena
Lei, Hechang
Li, Lijun
Cekić, Božidar Đ.
Koteski, Vasil J.
Petrović, Čedomir
Ivanovski, Valentin N.
Umićević, Ana
Belošević-Čavor, Jelena
Lei, Hechang
Li, Lijun
Cekić, Božidar Đ.
Koteski, Vasil J.
Petrović, Čedomir
Source :
Journal of Alloys and Compounds
Publication Year :
2015

Abstract

The local electronic and magnetic structure, hyperfine interactions, and phase composition of polycrystalline Ni-deficient Ni3-xFexAl (x = 0.18 and 0.36) were investigated by means of Fe-57 Mossbauer spectroscopy. The samples were characterized by X-ray diffraction and magnetization measurements. The ab initio calculations performed with the projector augmented wave method and the calculations of the energies of iron point defects were done to elucidate the electronic structure and site preference of Fe doped Ni3Al. The value of calculated electric field gradient tensor V-zz = 1.6 10(21) Vm(-2) matches well with the results of Mossbauer spectroscopy and indicates that the Fe atoms occupy Ni sites. (C) 2015 Elsevier B.V. All rights reserved.

Details

Database :
OAIster
Journal :
Journal of Alloys and Compounds
Notes :
Journal of Alloys and Compounds
Publication Type :
Electronic Resource
Accession number :
edsoai.on1085019311
Document Type :
Electronic Resource