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@ARTICLE{Rodrguez:201673,
author = {Rodríguez, D. Martín and Plazaola, F. and Garitaonandia,
J. S. and Jiménez, J. A. and Apiñaniz, E.},
title = {{I}nfluence of volume and {F}e local environment on
magnetic properties of {F}e-rich {F}e–{A}l alloysft},
journal = {Intermetallics},
volume = {24},
issn = {0966-9795},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2015-03967},
pages = {38 - 49},
year = {2012},
abstract = {Fe-rich Fe–Al alloys present a large variety of magnetic
behaviors and mechanical deformation of those alloys affects
largely their magnetism. At room temperature alloys can be
ferromagnetic, paramagnetic or show magnetic
inhomogeneities, and at low temperatures spin-glass and
re-entrant spin-glass phenomena have been found.
Unfortunately, the mechanisms proposed in the literature to
explain the magnetism of these alloys and the increase of
the magnetic signal after deformation have discrepancies.
This paper, based on Mössbauer spectroscopy measurements,
with the support of X-ray diffraction and magnetic
measurements performed on annealed and deformed samples and
in a wide concentration range, proposes and describes a new
way to understand the magnetic behavior of this alloy
system. The data obtained from annealed samples confirm that
Fe local environment have influence on the intensity of the
competing exchange interactions (ferro- and
antiferromagnetic). However, it is necessary to take into
account the effect of the first and second nearest neighbor
shells to explain the different magnetic behaviors found in
this system. The data obtained from deformed samples show in
addition that Fe–Fe interatomic distance also plays an
important role on the magnetic properties of these alloys.
When the interatomic distance is increased, the
ferromagnetic exchange interaction is favored. The
mechanisms described in this report will explain phenomena
as the origin of the magnetic inhomogeneities on some of
these alloys, as well as its behavior at low temperatures
and the increase of magnetization caused by mechanical
deformation.},
cin = {ICS-1 / Neutronenstreuung ; JCNS-1},
ddc = {660},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
pnm = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
(POF2-54G24)},
pid = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000302432800007},
doi = {10.1016/j.intermet.2012.01.021},
url = {https://juser.fz-juelich.de/record/201673},
}